diff mbox

clk: rockchip: disable unused clocks

Message ID 1414577167-25666-1-git-send-email-kever.yang@rock-chips.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kever Yang Oct. 29, 2014, 10:06 a.m. UTC 
The rockchip clock driver use CLK_IGNORE_UNUSED flag to make sure
all the clocks are available like default power on state.
We have implement the clock manage in most of rockchip drivers,
it is time to remove it for power save.
Instead we add CLK_IGNORE_UNUSED for some clock nodes which should
be on during boot or no module driver in kernel will initialize it.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
---

 drivers/clk/rockchip/clk-rk3188.c |  32 ++++-----
 drivers/clk/rockchip/clk-rk3288.c | 146 +++++++++++++++++++-------------------
 drivers/clk/rockchip/clk.c        |   9 ---
 3 files changed, 90 insertions(+), 97 deletions(-)

Comments

Heiko Stübner Oct. 29, 2014, 7:05 p.m. UTC | #1 
Hi Kever,

Am Mittwoch, 29. Oktober 2014, 18:06:07 schrieb Kever Yang:
> The rockchip clock driver use CLK_IGNORE_UNUSED flag to make sure
> all the clocks are available like default power on state.
> We have implement the clock manage in most of rockchip drivers,
> it is time to remove it for power save.
> Instead we add CLK_IGNORE_UNUSED for some clock nodes which should
> be on during boot or no module driver in kernel will initialize it.
> 
> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

I did test it on all three socs I have and two issues popped up.

the easy issue:
- aclk_strc_sys in common_clk_branches
- aclk_core in rk3188_clk_branches
need to also stay on in clk-rk3188.c


the hard issue:
With this patch applied and the above fixed, both the Radxa Rock (rk3188) and 
Hayou Marsboard (rk3066a) produce imprecise external aborts when entering 
userspace.

I guess there is still a clock in there that should stay on. I've attached 
logs that highlight the clocks that get disabled in the late_initcall. [error 
happens with and without these extra messages].


I'll investigate further, but if you have an idea which of the clocks might be 
responsible I would be very glad :-)


thanks
Heiko
[...]
TCP: cubic registered
NET: Registered protocol family 17
Registering SWP/SWPB emulation handler
sdmmc-supply: 3000 mV 
sdmmc-supply: supplied by vcc_io
input: gpio-keys as /devices/gpio-keys/input/input0
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
tps65910-rtc tps65910-rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
sdmmc-supply: disabling
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
clk_gate_endisable: sclk_tsadc to 0
clk_gate_endisable: spdif_pre to 0
clk_gate_endisable: i2s2_frac to 0
clk_gate_endisable: i2s2_pre to 0
clk_gate_endisable: i2s1_frac to 0
clk_gate_endisable: i2s1_pre to 0
clk_gate_endisable: i2s0_frac to 0
clk_gate_endisable: i2s0_pre to 0
clk_gate_endisable: aclk_gpu to 0
clk_gate_endisable: aclk_gpu_src to 0
clk_gate_endisable: aclk_smc to 0
clk_gate_endisable: hclk_usbotg1 to 0
clk_gate_endisable: hclk_emmc to 0
clk_gate_endisable: hclk_sdio to 0
clk_gate_endisable: hclk_sdmmc to 0
clk_gate_endisable: hclk_pidfilter to 0
clk_gate_endisable: hclk_hsadc to 0
clk_gate_endisable: hclk_usbotg0 to 0
clk_gate_endisable: hclk_usb_peri to 0
clk_gate_endisable: hclk_nandc0 to 0
clk_gate_endisable: hclk_emac to 0
clk_gate_endisable: hclk_emem_peri to 0
clk_gate_endisable: hclk_peri_ahb_arbi to 0
clk_gate_endisable: hclk_peri_axi_matrix to 0
clk_gate_endisable: sclk_emmc to 0
clk_gate_endisable: sclk_sdio to 0
clk_gate_endisable: sclk_sdmmc to 0
clk_gate_endisable: pclk_tsadc to 0
clk_gate_endisable: pclk_saradc to 0
clk_gate_endisable: pclk_i2c4 to 0
clk_gate_endisable: pclk_i2c3 to 0
clk_gate_endisable: pclk_i2c2 to 0
clk_gate_endisable: pclk_spi1 to 0
clk_gate_endisable: pclk_spi0 to 0
clk_gate_endisable: pclk_wdt to 0
clk_gate_endisable: pclk_pwm23 to 0
clk_gate_endisable: sclk_spi1 to 0
clk_gate_endisable: sclk_spi0 to 0
clk_gate_endisable: mac_src to 0
clk_gate_endisable: hsadc_frac to 0
clk_gate_endisable: hsadc_src to 0
clk_gate_endisable: uart3_frac to 0
clk_gate_endisable: uart3_pre to 0
clk_gate_endisable: uart2_frac to 0
clk_gate_endisable: uart2_pre to 0
clk_gate_endisable: uart1_frac to 0
clk_gate_endisable: uart1_pre to 0
clk_gate_endisable: uart0_frac to 0
clk_gate_endisable: uart0_pre to 0
clk_gate_endisable: dclk_lcdc1_src to 0
clk_gate_endisable: dclk_lcdc0_src to 0
clk_gate_endisable: hclk_vepu to 0
clk_gate_endisable: aclk_vepu to 0
clk_gate_endisable: hclk_vdpu to 0
clk_gate_endisable: aclk_vdpu to 0
clk_gate_endisable: aclk_ipp to 0
clk_gate_endisable: aclk_cif0 to 0
clk_gate_endisable: aclk_lcdc0 to 0
clk_gate_endisable: aclk_vio0 to 0
clk_gate_endisable: aclk_cif1 to 0
clk_gate_endisable: aclk_rga to 0
clk_gate_endisable: aclk_lcdc1 to 0
clk_gate_endisable: aclk_vio1 to 0
clk_gate_endisable: aclk_lcdc1_pre to 0
clk_gate_endisable: cif1_pre to 0
clk_gate_endisable: cif0_pre to 0
clk_gate_endisable: core_dbg to 0
clk_gate_endisable: hclk_ahb2apb to 0
clk_gate_endisable: hclk_hdmi to 0
clk_gate_endisable: hclk_cif1 to 0
clk_gate_endisable: hclk_i2s2 to 0
clk_gate_endisable: hclk_i2s1 to 0
clk_gate_endisable: hclk_rga to 0
clk_gate_endisable: hclk_ipp to 0
clk_gate_endisable: hclk_cif0 to 0
clk_gate_endisable: hclk_lcdc0 to 0
clk_gate_endisable: hclk_vio_bus to 0
clk_gate_endisable: hclk_cpubus to 0
clk_gate_endisable: hclk_spdif to 0
clk_gate_endisable: hclk_i2s0 to 0
clk_gate_endisable: hclk_rom to 0
clk_gate_endisable: trace to 0
clk_gate_endisable: atclk to 0
clk_gate_endisable: atclk_cpu to 0
clk_gate_endisable: pclk_timer1 to 0
clk_gate_endisable: pclk_dbg to 0
clk_gate_endisable: pclk_ddrpubl to 0
clk_gate_endisable: pclk_ddrupctl to 0
clk_gate_endisable: pclk_tzpc to 0
clk_gate_endisable: pclk_efuse to 0
clk_gate_endisable: pclk_i2c0 to 0
clk_gate_endisable: pclk_pwm01 to 0
clk_gate_endisable: hclk_lcdc1 to 0
clk_gate_endisable: timer1 to 0
clk_gate_endisable: sclk_saradc to 0
clk_gate_endisable: spdif_frac to 0
clk_gate_endisable: pclkin_cif1 to 0
clk_gate_endisable: jtag to 0
clk_gate_endisable: pclkin_cif0 to 0
Freeing unused kernel memory: 2072K (c055a000 - c0760000)
Unhandled fault: imprecise external abort (0x1406) at 0x0011b9c3
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007

CPU: 0 PID: 1 Comm: init Not tainted 3.18.0-rc1+ #1305
Backtrace: 
[<c0011a14>] (dump_backtrace) from [<c0011ba8>] (show_stack+0x18/0x1c)
 r6:ee859b40 r5:00000000 r4:c0773e74 r3:00400704
[<c0011b90>] (show_stack) from [<c040e6a8>] (dump_stack+0x74/0x8c)
[<c040e634>] (dump_stack) from [<c040cf34>] (panic+0x90/0x1ec)
 r5:c076e4d8 r4:ee859b40
[<c040cea8>] (panic) from [<c0022bf4>] (do_exit+0x454/0x88c)
 r3:ee83bdc0 r2:ee859b40 r1:00000007 r0:c04d6112
 r7:ee85a000
[<c00227a0>] (do_exit) from [<c002316c>] (do_group_exit+0x54/0xcc)
 r7:ee83aac0
[<c0023118>] (do_group_exit) from [<c002be6c>] (get_signal+0x4b8/0x528)
 r7:ee83aac0 r6:ee85bed0 r5:00000007 r4:ee85a000
[<c002b9b4>] (get_signal) from [<c040cb5c>] (do_signal+0x8c/0x358)
 r10:00000000 r9:ee85a000 r8:00000000 r7:00000000 r6:00000000 r5:ee85bfb0
 r4:ee85bfb0
[<c040cad0>] (do_signal) from [<c0011524>] (do_work_pending+0x50/0xc8)
 r10:00000000 r8:00000000 r7:10c5387d r6:00000000 r5:ee85bfb0 r4:0000f210
[<c00114d4>] (do_work_pending) from [<c000ece0>] (work_pending+0xc/0x20)
 r6:ffffffff r5:00000030 r4:0000f210 r3:ee859b40
CPU1: stopping
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.18.0-rc1+ #1305
Backtrace: 
[<c0011a14>] (dump_backtrace) from [<c0011ba8>] (show_stack+0x18/0x1c)
 r6:c075eb94 r5:00000000 r4:c0773e74 r3:00200040
[<c0011b90>] (show_stack) from [<c040e6a8>] (dump_stack+0x74/0x8c)
[<c040e634>] (dump_stack) from [<c0013b3c>] (handle_IPI+0xd4/0x16c)
 r5:c0793c18 r4:00000001
[<c0013a68>] (handle_IPI) from [<c0008658>] (gic_handle_irq+0x60/0x68)
 r6:c0769174 r5:ee879f70 r4:f0002100 r3:00000005
[<c00085f8>] (gic_handle_irq) from [<c0012640>] (__irq_svc+0x40/0x54)
Exception stack(0xee879f70 to 0xee879fb8)
9f60:                                     ffffffed 00000000 00000000 c001ce40
9f80: ee878000 00000000 00000000 ffffffed 00000000 413fc090 00000000 ee879fc4
9fa0: ee879fc8 ee879fb8 c000f888 c000f88c 60000113 ffffffff
 r6:ffffffff r5:60000113 r4:c000f88c r3:c000f888
[<c000f858>] (arch_cpu_idle) from [<c004ac0c>] (cpu_startup_entry+0xb8/0x204)
[<c004ab54>] (cpu_startup_entry) from [<c001382c>] (secondary_start_kernel+0x128/0x148)
 r7:c0793c44 r3:00000085
[<c0013704>] (secondary_start_kernel) from [<600086e4>] (0x600086e4)
 r4:8e86006a r3:c00086cc
---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007
[...]
TCP: cubic registered
NET: Registered protocol family 17
Registering SWP/SWPB emulation handler
sdmmc-supply: 3300 mV 
sdmmc-supply: supplied by VCC_IO
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
clk_gate_endisable: hclk_emac to 1
rockchip_emac 10204000.ethernet: ARC EMAC detected with id: 0x7fd02
rockchip_emac 10204000.ethernet: IRQ is 51
rockchip_emac 10204000.ethernet: MAC address is now 36:8c:46:23:5a:e1
libphy: Synopsys MII Bus: probed
rockchip_emac 10204000.ethernet: connected to SMSC LAN8710/LAN8720 phy with id 0x7c0f1
input: gpio-keys as /devices/gpio-keys/input/input0
rtc-hym8563 1-0051: no valid clock/calendar values available
rtc-hym8563 1-0051: hctosys: unable to read the hardware clock
sdmmc-supply: disabling
clk_gate_endisable: timer6 to 0
clk_gate_endisable: timer5 to 0
clk_gate_endisable: timer4 to 0
clk_gate_endisable: timer3 to 0
clk_gate_endisable: timer2 to 0
clk_gate_endisable: hclk_imem1 to 0
clk_gate_endisable: hclk_imem0 to 0
clk_gate_endisable: hclk_rga to 0
clk_gate_endisable: hclk_ipp to 0
clk_gate_endisable: hclk_cif0 to 0
clk_gate_endisable: hclk_lcdc0 to 0
clk_gate_endisable: hclk_vio_bus to 0
clk_gate_endisable: hclk_cpubus to 0
clk_gate_endisable: hclk_spdif to 0
clk_gate_endisable: hclk_i2s0 to 0
clk_gate_endisable: hclk_rom to 0
clk_gate_endisable: trace to 0
clk_gate_endisable: atclk to 0
clk_gate_endisable: atclk_cpu to 0
clk_gate_endisable: pclk_timer3 to 0
clk_gate_endisable: pclk_dbg to 0
clk_gate_endisable: pclk_ddrpubl to 0
clk_gate_endisable: pclk_ddrupctl to 0
clk_gate_endisable: pclk_tzpc to 0
clk_gate_endisable: pclk_efuse to 0
clk_gate_endisable: pclk_i2c0 to 0
clk_gate_endisable: pclk_timer0 to 0
clk_gate_endisable: pclk_pwm01 to 0
clk_gate_endisable: hclk_lcdc1 to 0
clk_gate_endisable: spdif_pre to 0
clk_gate_endisable: i2s0_frac to 0
clk_gate_endisable: i2s0_pre to 0
clk_gate_endisable: aclk_gps to 0
clk_gate_endisable: aclk_smc to 0
clk_gate_endisable: hclk_hsic to 0
clk_gate_endisable: hclk_usbotg1 to 0
clk_gate_endisable: hclk_emmc to 0
clk_gate_endisable: hclk_sdio to 0
clk_gate_endisable: hclk_sdmmc to 0
clk_gate_endisable: hclk_pidfilter to 0
clk_gate_endisable: hclk_hsadc to 0
clk_gate_endisable: hclk_usbotg0 to 0
clk_gate_endisable: hclk_usb_peri to 0
clk_gate_endisable: hclk_nandc0 to 0
clk_gate_endisable: hclk_emem_peri to 0
clk_gate_endisable: hclk_peri_ahb_arbi to 0
clk_gate_endisable: hclk_peri_axi_matrix to 0
clk_gate_endisable: sclk_emmc to 0
clk_gate_endisable: sclk_sdio to 0
clk_gate_endisable: sclk_sdmmc to 0
clk_gate_endisable: pclk_saradc to 0
clk_gate_endisable: pclk_i2c4 to 0
clk_gate_endisable: pclk_i2c3 to 0
clk_gate_endisable: pclk_i2c2 to 0
clk_gate_endisable: pclk_spi1 to 0
clk_gate_endisable: pclk_spi0 to 0
clk_gate_endisable: pclk_wdt to 0
clk_gate_endisable: pclk_pwm23 to 0
clk_gate_endisable: sclk_spi1 to 0
clk_gate_endisable: sclk_spi0 to 0
clk_gate_endisable: hsadc_frac to 0
clk_gate_endisable: hsadc_src to 0
clk_gate_endisable: uart3_frac to 0
clk_gate_endisable: uart3_pre to 0
clk_gate_endisable: uart2_frac to 0
clk_gate_endisable: uart2_pre to 0
clk_gate_endisable: uart1_frac to 0
clk_gate_endisable: uart1_pre to 0
clk_gate_endisable: uart0_frac to 0
clk_gate_endisable: uart0_pre to 0
clk_gate_endisable: aclk_gpu to 0
clk_gate_endisable: aclk_gpu_src to 0
clk_gate_endisable: dclk_lcdc1 to 0
clk_gate_endisable: dclk_lcdc0 to 0
clk_gate_endisable: hclk_vepu to 0
clk_gate_endisable: aclk_vepu to 0
clk_gate_endisable: hclk_vdpu to 0
clk_gate_endisable: aclk_vdpu to 0
clk_gate_endisable: aclk_ipp to 0
clk_gate_endisable: aclk_cif0 to 0
clk_gate_endisable: aclk_lcdc0 to 0
clk_gate_endisable: aclk_vio0 to 0
clk_gate_endisable: aclk_rga to 0
clk_gate_endisable: aclk_lcdc1 to 0
clk_gate_endisable: aclk_vio1 to 0
clk_gate_endisable: aclk_lcdc1_pre to 0
clk_gate_endisable: cif0_pre to 0
clk_gate_endisable: core_dbg to 0
clk_gate_endisable: timer1 to 0
clk_gate_endisable: timer0 to 0
clk_gate_endisable: sclk_saradc to 0
clk_gate_endisable: sclk_hsicphy_480m to 0
clk_gate_endisable: spdif_frac to 0
clk_gate_endisable: jtag to 0
clk_gate_endisable: pclkin_cif0 to 0
clk_gate_endisable: pclk_i2c1 to 1
clk_gate_endisable: pclk_i2c1 to 0
Freeing unused kernel memory: 2072K (c055a000 - c0760000)
Unhandled fault: imprecise external abort (0x1406) at 0x0011b9c3
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007

CPU: 1 PID: 1 Comm: init Not tainted 3.18.0-rc1+ #1305
Backtrace: 
[<c0011a14>] (dump_backtrace) from [<c0011ba8>] (show_stack+0x18/0x1c)
 r6:ee057b40 r5:00000000 r4:c0773e74 r3:00400704
[<c0011b90>] (show_stack) from [<c040e6a8>] (dump_stack+0x74/0x8c)
[<c040e634>] (dump_stack) from [<c040cf34>] (panic+0x90/0x1ec)
 r5:c076e4d8 r4:ee057b40
[<c040cea8>] (panic) from [<c0022bf4>] (do_exit+0x454/0x88c)
 r3:ee039dc0 r2:ee057b40 r1:00000007 r0:c04d6112
 r7:ee058000
[<c00227a0>] (do_exit) from [<c002316c>] (do_group_exit+0x54/0xcc)
 r7:ee038ac0
[<c0023118>] (do_group_exit) from [<c002be6c>] (get_signal+0x4b8/0x528)
 r7:ee038ac0 r6:ee059ed0 r5:00000007 r4:ee058000
[<c002b9b4>] (get_signal) from [<c040cb5c>] (do_signal+0x8c/0x358)
 r10:00000000 r9:ee058000 r8:00000000 r7:00000000 r6:00000000 r5:ee059fb0
 r4:ee059fb0
[<c040cad0>] (do_signal) from [<c0011524>] (do_work_pending+0x50/0xc8)
 r10:00000000 r8:00000000 r7:10c5387d r6:00000000 r5:ee059fb0 r4:0000f210
[<c00114d4>] (do_work_pending) from [<c000ece0>] (work_pending+0xc/0x20)
 r6:ffffffff r5:00000030 r4:0000f210 r3:ee057b40
CPU3: stopping
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 3.18.0-rc1+ #1305
Backtrace: 
[<c0011a14>] (dump_backtrace) from [<c0011ba8>] (show_stack+0x18/0x1c)
 r6:c075eb94 r5:00000000 r4:c0773e74 r3:00200040
[<c0011b90>] (show_stack) from [<c040e6a8>] (dump_stack+0x74/0x8c)
[<c040e634>] (dump_stack) from [<c0013b3c>] (handle_IPI+0xd4/0x16c)
 r5:c0793c18 r4:00000003
[<c0013a68>] (handle_IPI) from [<c0008658>] (gic_handle_irq+0x60/0x68)
 r6:c0769174 r5:ee07bf70 r4:f0002100 r3:00000405
[<c00085f8>] (gic_handle_irq) from [<c0012640>] (__irq_svc+0x40/0x54)
Exception stack(0xee07bf70 to 0xee07bfb8)
bf60:                                     ffffffed 00000000 00000000 c001ce40
bf80: ee07a000 00000000 00000000 ffffffed 00000000 413fc090 00000000 ee07bfc4
bfa0: ee07bfc8 ee07bfb8 c000f888 c000f88c 60000113 ffffffff
 r6:ffffffff r5:60000113 r4:c000f88c r3:c000f888
[<c000f858>] (arch_cpu_idle) from [<c004ac0c>] (cpu_startup_entry+0xb8/0x204)
[<c004ab54>] (cpu_startup_entry) from [<c001382c>] (secondary_start_kernel+0x128/0x148)
 r7:c0793c44 r3:00000087
[<c0013704>] (secondary_start_kernel) from [<600086e4>] (0x600086e4)
 r4:8e05c06a r3:c00086cc
CPU0: stopping
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.0-rc1+ #1305
Backtrace: 
[<c0011a14>] (dump_backtrace) from [<c0011ba8>] (show_stack+0x18/0x1c)
 r6:c075eb94 r5:00000000 r4:c0773e74 r3:00200000
[<c0011b90>] (show_stack) from [<c040e6a8>] (dump_stack+0x74/0x8c)
[<c040e634>] (dump_stack) from [<c0013b3c>] (handle_IPI+0xd4/0x16c)
 r5:c0793c18 r4:00000000
[<c0013a68>] (handle_IPI) from [<c0008658>] (gic_handle_irq+0x60/0x68)
 r6:c0769174 r5:c0761f38 r4:f0002100 r3:00000405
[<c00085f8>] (gic_handle_irq) from [<c0012640>] (__irq_svc+0x40/0x54)
Exception stack(0xc0761f38 to 0xc0761f80)
1f20:                                                       ffffffed 00000000
1f40: 00000000 c001ce40 c0760000 00000000 00000000 ffffffed 00000000 413fc090
1f60: ef7fcc40 c0761f8c c0761f90 c0761f80 c000f888 c000f88c 60000113 ffffffff
 r6:ffffffff r5:60000113 r4:c000f88c r3:c000f888
[<c000f858>] (arch_cpu_idle) from [<c004ac0c>] (cpu_startup_entry+0xb8/0x204)
[<c004ab54>] (cpu_startup_entry) from [<c040bc4c>] (rest_init+0x68/0x80)
 r7:c05860f0 r3:00000000
[<c040bbe4>] (rest_init) from [<c055ac60>] (start_kernel+0x324/0x390)
[<c055a93c>] (start_kernel) from [<60008074>] (0x60008074)
CPU2: stopping
CPU: 2 PID: 0 Comm: swapper/2 Not tainted 3.18.0-rc1+ #1305
Backtrace: 
[<c0011a14>] (dump_backtrace) from [<c0011ba8>] (show_stack+0x18/0x1c)
 r6:c075eb94 r5:00000000 r4:c0773e74 r3:00200040
[<c0011b90>] (show_stack) from [<c040e6a8>] (dump_stack+0x74/0x8c)
[<c040e634>] (dump_stack) from [<c0013b3c>] (handle_IPI+0xd4/0x16c)
 r5:c0793c18 r4:00000002
[<c0013a68>] (handle_IPI) from [<c0008658>] (gic_handle_irq+0x60/0x68)
 r6:c0769174 r5:ee079f70 r4:f0002100 r3:00000405
[<c00085f8>] (gic_handle_irq) from [<c0012640>] (__irq_svc+0x40/0x54)
Exception stack(0xee079f70 to 0xee079fb8)
9f60:                                     ffffffed 00000000 00000000 c001ce40
9f80: ee078000 00000000 00000000 ffffffed 00000000 413fc090 00000000 ee079fc4
9fa0: ee079fc8 ee079fb8 c000f888 c000f88c 60000113 ffffffff
 r6:ffffffff r5:60000113 r4:c000f88c r3:c000f888
[<c000f858>] (arch_cpu_idle) from [<c004ac0c>] (cpu_startup_entry+0xb8/0x204)
[<c004ab54>] (cpu_startup_entry) from [<c001382c>] (secondary_start_kernel+0x128/0x148)
 r7:c0793c44 r3:00000083
[<c0013704>] (secondary_start_kernel) from [<600086e4>] (0x600086e4)
 r4:8e05c06a r3:c00086cc
---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007
Doug Anderson Oct. 29, 2014, 8:50 p.m. UTC | #2 
Kever,

On Wed, Oct 29, 2014 at 3:06 AM, Kever Yang <kever.yang@rock-chips.com> wrote:
> The rockchip clock driver use CLK_IGNORE_UNUSED flag to make sure
> all the clocks are available like default power on state.
> We have implement the clock manage in most of rockchip drivers,
> it is time to remove it for power save.
> Instead we add CLK_IGNORE_UNUSED for some clock nodes which should
> be on during boot or no module driver in kernel will initialize it.
>
> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
> ---
>
>  drivers/clk/rockchip/clk-rk3188.c |  32 ++++-----
>  drivers/clk/rockchip/clk-rk3288.c | 146 +++++++++++++++++++-------------------
>  drivers/clk/rockchip/clk.c        |   9 ---
>  3 files changed, 90 insertions(+), 97 deletions(-)

Your patch didn't seem to apply to the top of Heiko's
"v3.19-clk/next".  Where should it apply to?

> -       GATE(ACLK_CPU, "aclk_cpu", "aclk_cpu_pre", 0,
> +       GATE(0, "aclk_cpu", "aclk_cpu_pre", CLK_IGNORE_UNUSED,
>                         RK3288_CLKGATE_CON(0), 3, GFLAGS),

It seems strange to me that you're removing the ACLK_CPU ID here.  Was
that on purpose?

> -       COMPOSITE_NOMUX(PCLK_CPU, "pclk_cpu", "aclk_cpu_pre", 0,
> +       COMPOSITE_NOMUX(0, "pclk_cpu", "aclk_cpu_pre", CLK_IGNORE_UNUSED,
>                         RK3288_CLKSEL_CON(1), 12, 3, DFLAGS,
>                         RK3288_CLKGATE_CON(0), 5, GFLAGS),

Here too for PCLK_CPU.  There are a few others as well.


I'll also say that when I applied this atop my local tree that USB
stopped working.  I just see:

[ 1647.626747] hub 2-1:1.0: hub_port_status failed (err = -110)
[ 1657.626746] hub 2-1:1.0: hub_port_status failed (err = -110)

...over and over and over again.
Heiko Stübner Oct. 29, 2014, 9:53 p.m. UTC | #3 
Am Mittwoch, 29. Oktober 2014, 13:50:20 schrieb Doug Anderson:
> Kever,
> 
> On Wed, Oct 29, 2014 at 3:06 AM, Kever Yang <kever.yang@rock-chips.com> 
wrote:
> > The rockchip clock driver use CLK_IGNORE_UNUSED flag to make sure
> > all the clocks are available like default power on state.
> > We have implement the clock manage in most of rockchip drivers,
> > it is time to remove it for power save.
> > Instead we add CLK_IGNORE_UNUSED for some clock nodes which should
> > be on during boot or no module driver in kernel will initialize it.
> > 
> > Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
> > ---
> > 
> >  drivers/clk/rockchip/clk-rk3188.c |  32 ++++-----
> >  drivers/clk/rockchip/clk-rk3288.c | 146
> >  +++++++++++++++++++------------------- drivers/clk/rockchip/clk.c       
> >  |   9 ---
> >  3 files changed, 90 insertions(+), 97 deletions(-)
> 
> Your patch didn't seem to apply to the top of Heiko's
> "v3.19-clk/next".  Where should it apply to?
> 
> > -       GATE(ACLK_CPU, "aclk_cpu", "aclk_cpu_pre", 0,
> > +       GATE(0, "aclk_cpu", "aclk_cpu_pre", CLK_IGNORE_UNUSED,
> > 
> >                         RK3288_CLKGATE_CON(0), 3, GFLAGS),
> 
> It seems strange to me that you're removing the ACLK_CPU ID here.  Was
> that on purpose?
> 
> > -       COMPOSITE_NOMUX(PCLK_CPU, "pclk_cpu", "aclk_cpu_pre", 0,
> > +       COMPOSITE_NOMUX(0, "pclk_cpu", "aclk_cpu_pre", CLK_IGNORE_UNUSED,
> > 
> >                         RK3288_CLKSEL_CON(1), 12, 3, DFLAGS,
> >                         RK3288_CLKGATE_CON(0), 5, GFLAGS),
> 
> Here too for PCLK_CPU.  There are a few others as well.

yeah, they should keep their clock ids


> I'll also say that when I applied this atop my local tree that USB
> stopped working.  I just see:
> 
> [ 1647.626747] hub 2-1:1.0: hub_port_status failed (err = -110)
> [ 1657.626746] hub 2-1:1.0: hub_port_status failed (err = -110)
> 
> ...over and over and over again.

maybe Kever's dwc2 clock-handling patch [0] might help there, as the dwc2-host 
currently does not seem to do any clock handling at all.


Heiko


[0] http://www.spinics.net/lists/linux-usb/msg116278.html
diff mbox

Patch

diff --git a/drivers/clk/rockchip/clk-rk3188.c b/drivers/clk/rockchip/clk-rk3188.c
index beed49c..0265a33 100644
--- a/drivers/clk/rockchip/clk-rk3188.c
+++ b/drivers/clk/rockchip/clk-rk3188.c
@@ -257,9 +257,9 @@  static struct rockchip_clk_branch common_clk_branches[] __initdata = {
 	GATE(0, "hclk_vdpu", "aclk_vdpu", 0,
 			RK2928_CLKGATE_CON(3), 12, GFLAGS),
 
-	GATE(0, "gpll_ddr", "gpll", 0,
+	GATE(0, "gpll_ddr", "gpll", CLK_IGNORE_UNUSED,
 			RK2928_CLKGATE_CON(1), 7, GFLAGS),
-	COMPOSITE(0, "ddrphy", mux_ddrphy_p, 0,
+	COMPOSITE(0, "ddrphy", mux_ddrphy_p, CLK_IGNORE_UNUSED,
 			RK2928_CLKSEL_CON(26), 8, 1, MFLAGS, 0, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO,
 			RK2928_CLKGATE_CON(0), 2, GFLAGS),
 
@@ -270,10 +270,10 @@  static struct rockchip_clk_branch common_clk_branches[] __initdata = {
 			RK2928_CLKGATE_CON(0), 6, GFLAGS),
 	GATE(0, "pclk_cpu", "pclk_cpu_pre", 0,
 			RK2928_CLKGATE_CON(0), 5, GFLAGS),
-	GATE(0, "hclk_cpu", "hclk_cpu_pre", 0,
+	GATE(0, "hclk_cpu", "hclk_cpu_pre", CLK_IGNORE_UNUSED,
 			RK2928_CLKGATE_CON(0), 4, GFLAGS),
 
-	COMPOSITE(0, "aclk_lcdc0_pre", mux_pll_src_cpll_gpll_p, 0,
+	COMPOSITE(0, "aclk_lcdc0_pre", mux_pll_src_cpll_gpll_p, CLK_IGNORE_UNUSED,
 			RK2928_CLKSEL_CON(31), 7, 1, MFLAGS, 0, 5, DFLAGS,
 			RK2928_CLKGATE_CON(3), 0, GFLAGS),
 	COMPOSITE(0, "aclk_lcdc1_pre", mux_pll_src_cpll_gpll_p, 0,
@@ -304,9 +304,9 @@  static struct rockchip_clk_branch common_clk_branches[] __initdata = {
 	 * the 480m are generated inside the usb block from these clocks,
 	 * but they are also a source for the hsicphy clock.
 	 */
-	GATE(SCLK_OTGPHY0, "sclk_otgphy0", "usb480m", 0,
+	GATE(SCLK_OTGPHY0, "sclk_otgphy0", "usb480m", CLK_IGNORE_UNUSED,
 			RK2928_CLKGATE_CON(1), 5, GFLAGS),
-	GATE(SCLK_OTGPHY1, "sclk_otgphy1", "usb480m", 0,
+	GATE(SCLK_OTGPHY1, "sclk_otgphy1", "usb480m", CLK_IGNORE_UNUSED,
 			RK2928_CLKGATE_CON(1), 6, GFLAGS),
 
 	COMPOSITE(0, "mac_src", mux_mac_p, 0,
@@ -399,7 +399,7 @@  static struct rockchip_clk_branch common_clk_branches[] __initdata = {
 
 	/* aclk_cpu gates */
 	GATE(ACLK_DMA1, "aclk_dma1", "aclk_cpu", 0, RK2928_CLKGATE_CON(5), 0, GFLAGS),
-	GATE(0, "aclk_intmem", "aclk_cpu", 0, RK2928_CLKGATE_CON(4), 12, GFLAGS),
+	GATE(0, "aclk_intmem", "aclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 12, GFLAGS),
 	GATE(0, "aclk_strc_sys", "aclk_cpu", 0, RK2928_CLKGATE_CON(4), 10, GFLAGS),
 
 	/* hclk_cpu gates */
@@ -457,23 +457,23 @@  static struct rockchip_clk_branch common_clk_branches[] __initdata = {
 	GATE(0, "pclk_ddrupctl", "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 7, GFLAGS),
 	GATE(0, "pclk_ddrpubl", "pclk_cpu", 0, RK2928_CLKGATE_CON(9), 6, GFLAGS),
 	GATE(0, "pclk_dbg", "pclk_cpu", 0, RK2928_CLKGATE_CON(9), 1, GFLAGS),
-	GATE(PCLK_GRF, "pclk_grf", "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 4, GFLAGS),
-	GATE(PCLK_PMU, "pclk_pmu", "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 5, GFLAGS),
+	GATE(PCLK_GRF, "pclk_grf", "pclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 4, GFLAGS),
+	GATE(PCLK_PMU, "pclk_pmu", "pclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 5, GFLAGS),
 
 	/* aclk_peri */
 	GATE(ACLK_DMA2, "aclk_dma2", "aclk_peri", 0, RK2928_CLKGATE_CON(5), 1, GFLAGS),
 	GATE(ACLK_SMC, "aclk_smc", "aclk_peri", 0, RK2928_CLKGATE_CON(5), 8, GFLAGS),
-	GATE(0, "aclk_peri_niu", "aclk_peri", 0, RK2928_CLKGATE_CON(4), 4, GFLAGS),
-	GATE(0, "aclk_cpu_peri", "aclk_peri", 0, RK2928_CLKGATE_CON(4), 2, GFLAGS),
-	GATE(0, "aclk_peri_axi_matrix", "aclk_peri", 0, RK2928_CLKGATE_CON(4), 3, GFLAGS),
+	GATE(0, "aclk_peri_niu", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 4, GFLAGS),
+	GATE(0, "aclk_cpu_peri", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 2, GFLAGS),
+	GATE(0, "aclk_peri_axi_matrix", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 3, GFLAGS),
 
 	/* pclk_peri gates */
-	GATE(0, "pclk_peri_axi_matrix", "pclk_peri", 0, RK2928_CLKGATE_CON(4), 1, GFLAGS),
+	GATE(0, "pclk_peri_axi_matrix", "pclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 1, GFLAGS),
 	GATE(PCLK_PWM23, "pclk_pwm23", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 11, GFLAGS),
 	GATE(PCLK_WDT, "pclk_wdt", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 15, GFLAGS),
 	GATE(PCLK_SPI0, "pclk_spi0", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 12, GFLAGS),
 	GATE(PCLK_SPI1, "pclk_spi1", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 13, GFLAGS),
-	GATE(PCLK_UART2, "pclk_uart2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 2, GFLAGS),
+	GATE(PCLK_UART2, "pclk_uart2", "pclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(8), 2, GFLAGS),
 	GATE(PCLK_UART3, "pclk_uart3", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 3, GFLAGS),
 	GATE(PCLK_I2C2, "pclk_i2c2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 6, GFLAGS),
 	GATE(PCLK_I2C3, "pclk_i2c3", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 7, GFLAGS),
@@ -511,7 +511,7 @@  static struct rockchip_clk_branch rk3066a_clk_branches[] __initdata = {
 							    | CLK_DIVIDER_READ_ONLY,
 			RK2928_CLKGATE_CON(4), 9, GFLAGS),
 
-	GATE(CORE_L2C, "core_l2c", "aclk_cpu", 0,
+	GATE(CORE_L2C, "core_l2c", "aclk_cpu", CLK_IGNORE_UNUSED,
 			RK2928_CLKGATE_CON(9), 4, GFLAGS),
 
 	COMPOSITE(0, "aclk_peri_pre", mux_pll_src_gpll_cpll_p, 0,
@@ -633,7 +633,7 @@  static struct rockchip_clk_branch rk3188_clk_branches[] __initdata = {
 			RK2928_CLKSEL_CON(1), 14, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO,
 			RK2928_CLKGATE_CON(4), 9, GFLAGS),
 
-	GATE(CORE_L2C, "core_l2c", "armclk", 0,
+	GATE(CORE_L2C, "core_l2c", "armclk", CLK_IGNORE_UNUSED,
 			RK2928_CLKGATE_CON(9), 4, GFLAGS),
 
 	COMPOSITE(0, "aclk_peri_pre", mux_pll_src_cpll_gpll_p, 0,
diff --git a/drivers/clk/rockchip/clk-rk3288.c b/drivers/clk/rockchip/clk-rk3288.c
index 4629182..472eb90 100644
--- a/drivers/clk/rockchip/clk-rk3288.c
+++ b/drivers/clk/rockchip/clk-rk3288.c
@@ -226,31 +226,33 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	 * Clock-Architecture Diagram 1
 	 */
 
-	GATE(0, "apll_core", "apll", 0,
+	GATE(0, "apll_core", "apll", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(0), 1, GFLAGS),
-	GATE(0, "gpll_core", "gpll", 0,
+	GATE(0, "gpll_core", "gpll", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(0), 2, GFLAGS),
+	COMPOSITE_NOGATE(0, "armclk", mux_armclk_p, CLK_IGNORE_UNUSED,
+			RK3288_CLKSEL_CON(0), 15, 1, MFLAGS, 8, 5, DFLAGS),
 
-	COMPOSITE_NOMUX(0, "armcore0", "armclk", 0,
-			RK3288_CLKSEL_CON(36), 0, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
+	COMPOSITE_NOMUX(0, "armcore0", "armclk", CLK_IGNORE_UNUSED,
+			RK3288_CLKSEL_CON(36), 0, 3, DFLAGS,
 			RK3288_CLKGATE_CON(12), 0, GFLAGS),
-	COMPOSITE_NOMUX(0, "armcore1", "armclk", 0,
-			RK3288_CLKSEL_CON(36), 4, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
+	COMPOSITE_NOMUX(0, "armcore1", "armclk", CLK_IGNORE_UNUSED,
+			RK3288_CLKSEL_CON(36), 4, 3, DFLAGS,
 			RK3288_CLKGATE_CON(12), 1, GFLAGS),
-	COMPOSITE_NOMUX(0, "armcore2", "armclk", 0,
-			RK3288_CLKSEL_CON(36), 8, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
+	COMPOSITE_NOMUX(0, "armcore2", "armclk", CLK_IGNORE_UNUSED,
+			RK3288_CLKSEL_CON(36), 8, 3, DFLAGS,
 			RK3288_CLKGATE_CON(12), 2, GFLAGS),
-	COMPOSITE_NOMUX(0, "armcore3", "armclk", 0,
-			RK3288_CLKSEL_CON(36), 12, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
+	COMPOSITE_NOMUX(0, "armcore3", "armclk", CLK_IGNORE_UNUSED,
+			RK3288_CLKSEL_CON(36), 12, 3, DFLAGS,
 			RK3288_CLKGATE_CON(12), 3, GFLAGS),
-	COMPOSITE_NOMUX(0, "l2ram", "armclk", 0,
-			RK3288_CLKSEL_CON(37), 0, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
+	COMPOSITE_NOMUX(0, "l2ram", "armclk", CLK_IGNORE_UNUSED,
+			RK3288_CLKSEL_CON(37), 0, 3, DFLAGS,
 			RK3288_CLKGATE_CON(12), 4, GFLAGS),
-	COMPOSITE_NOMUX(0, "aclk_core_m0", "armclk", 0,
-			RK3288_CLKSEL_CON(0), 0, 4, DFLAGS | CLK_DIVIDER_READ_ONLY,
+	COMPOSITE_NOMUX(0, "aclk_core_m0", "armclk", CLK_IGNORE_UNUSED,
+			RK3288_CLKSEL_CON(0), 0, 4, DFLAGS,
 			RK3288_CLKGATE_CON(12), 5, GFLAGS),
-	COMPOSITE_NOMUX(0, "aclk_core_mp", "armclk", 0,
-			RK3288_CLKSEL_CON(0), 4, 4, DFLAGS | CLK_DIVIDER_READ_ONLY,
+	COMPOSITE_NOMUX(0, "aclk_core_mp", "armclk", CLK_IGNORE_UNUSED,
+			RK3288_CLKSEL_CON(0), 4, 4, DFLAGS,
 			RK3288_CLKGATE_CON(12), 6, GFLAGS),
 	COMPOSITE_NOMUX(0, "atclk", "armclk", 0,
 			RK3288_CLKSEL_CON(37), 4, 5, DFLAGS | CLK_DIVIDER_READ_ONLY,
@@ -265,28 +267,28 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	GATE(0, "pclk_core_niu", "pclk_dbg_pre", 0,
 			RK3288_CLKGATE_CON(12), 11, GFLAGS),
 
-	GATE(0, "dpll_ddr", "dpll", 0,
+	GATE(0, "dpll_ddr", "dpll", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(0), 8, GFLAGS),
 	GATE(0, "gpll_ddr", "gpll", 0,
 			RK3288_CLKGATE_CON(0), 9, GFLAGS),
-	COMPOSITE_NOGATE(0, "ddrphy", mux_ddrphy_p, 0,
+	COMPOSITE_NOGATE(0, "ddrphy", mux_ddrphy_p, CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(26), 2, 1, MFLAGS, 0, 2,
 					DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
 
-	GATE(0, "gpll_aclk_cpu", "gpll", 0,
+	GATE(0, "gpll_aclk_cpu", "gpll", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(0), 10, GFLAGS),
-	GATE(0, "cpll_aclk_cpu", "cpll", 0,
+	GATE(0, "cpll_aclk_cpu", "cpll", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(0), 11, GFLAGS),
-	COMPOSITE_NOGATE(0, "aclk_cpu_src", mux_aclk_cpu_src_p, 0,
+	COMPOSITE_NOGATE(0, "aclk_cpu_src", mux_aclk_cpu_src_p, CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(1), 15, 1, MFLAGS, 3, 5, DFLAGS),
 	DIV(0, "aclk_cpu_pre", "aclk_cpu_src", 0,
 			RK3288_CLKSEL_CON(1), 0, 3, DFLAGS),
-	GATE(ACLK_CPU, "aclk_cpu", "aclk_cpu_pre", 0,
+	GATE(0, "aclk_cpu", "aclk_cpu_pre", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(0), 3, GFLAGS),
-	COMPOSITE_NOMUX(PCLK_CPU, "pclk_cpu", "aclk_cpu_pre", 0,
+	COMPOSITE_NOMUX(0, "pclk_cpu", "aclk_cpu_pre", CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(1), 12, 3, DFLAGS,
 			RK3288_CLKGATE_CON(0), 5, GFLAGS),
-	COMPOSITE_NOMUX_DIVTBL(HCLK_CPU, "hclk_cpu", "aclk_cpu_pre", 0,
+	COMPOSITE_NOMUX_DIVTBL(0, "hclk_cpu", "aclk_cpu_pre", CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(1), 8, 2, DFLAGS, div_hclk_cpu_t,
 			RK3288_CLKGATE_CON(0), 4, GFLAGS),
 	GATE(0, "c2c_host", "aclk_cpu_src", 0,
@@ -294,7 +296,7 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	COMPOSITE_NOMUX(0, "crypto", "aclk_cpu_pre", 0,
 			RK3288_CLKSEL_CON(26), 6, 2, DFLAGS,
 			RK3288_CLKGATE_CON(5), 4, GFLAGS),
-	GATE(0, "aclk_bus_2pmu", "aclk_cpu_pre", 0,
+	GATE(0, "aclk_bus_2pmu", "aclk_cpu_pre", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(0), 7, GFLAGS),
 
 	COMPOSITE(0, "i2s_src", mux_pll_src_cpll_gpll_p, 0,
@@ -373,12 +375,12 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	GATE(HCLK_VCODEC, "hclk_vcodec", "hclk_vcodec_pre", 0,
 		RK3288_CLKGATE_CON(9), 1, GFLAGS),
 
-	COMPOSITE(0, "aclk_vio0", mux_pll_src_cpll_gpll_usb480m_p, 0,
+	COMPOSITE(0, "aclk_vio0", mux_pll_src_cpll_gpll_usb480m_p, CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(31), 6, 2, MFLAGS, 0, 5, DFLAGS,
 			RK3288_CLKGATE_CON(3), 0, GFLAGS),
 	DIV(0, "hclk_vio", "aclk_vio0", 0,
 			RK3288_CLKSEL_CON(28), 8, 5, DFLAGS),
-	COMPOSITE(0, "aclk_vio1", mux_pll_src_cpll_gpll_usb480m_p, 0,
+	COMPOSITE(0, "aclk_vio1", mux_pll_src_cpll_gpll_usb480m_p, CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(31), 14, 2, MFLAGS, 8, 5, DFLAGS,
 			RK3288_CLKGATE_CON(3), 2, GFLAGS),
 
@@ -389,10 +391,10 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 			RK3288_CLKSEL_CON(30), 14, 2, MFLAGS, 8, 5, DFLAGS,
 			RK3288_CLKGATE_CON(3), 4, GFLAGS),
 
-	COMPOSITE(DCLK_VOP0, "dclk_vop0", mux_pll_src_cpll_gpll_npll_p, 0,
+	COMPOSITE(DCLK_VOP0, "dclk_vop0", mux_pll_src_cpll_gpll_npll_p, CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(27), 0, 2, MFLAGS, 8, 8, DFLAGS,
 			RK3288_CLKGATE_CON(3), 1, GFLAGS),
-	COMPOSITE(DCLK_VOP1, "dclk_vop1", mux_pll_src_cpll_gpll_npll_p, 0,
+	COMPOSITE(DCLK_VOP1, "dclk_vop1", mux_pll_src_cpll_gpll_npll_p, CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(29), 6, 2, MFLAGS, 8, 8, DFLAGS,
 			RK3288_CLKGATE_CON(3), 3, GFLAGS),
 
@@ -436,7 +438,7 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 
 	DIV(0, "pclk_pd_alive", "gpll", 0,
 			RK3288_CLKSEL_CON(33), 8, 5, DFLAGS),
-	COMPOSITE_NOMUX(0, "pclk_pd_pmu", "gpll", 0,
+	COMPOSITE_NOMUX(0, "pclk_pd_pmu", "gpll", CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(33), 0, 5, DFLAGS,
 			RK3288_CLKGATE_CON(5), 8, GFLAGS),
 
@@ -444,16 +446,16 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 			RK3288_CLKSEL_CON(34), 6, 2, MFLAGS, 0, 5, DFLAGS,
 			RK3288_CLKGATE_CON(5), 7, GFLAGS),
 
-	COMPOSITE(0, "aclk_peri_src", mux_pll_src_cpll_gpll_p, 0,
+	COMPOSITE(0, "aclk_peri_src", mux_pll_src_cpll_gpll_p, CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(10), 15, 1, MFLAGS, 0, 5, DFLAGS,
 			RK3288_CLKGATE_CON(2), 0, GFLAGS),
 	COMPOSITE_NOMUX(PCLK_PERI, "pclk_peri", "aclk_peri_src", 0,
 			RK3288_CLKSEL_CON(10), 12, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO,
 			RK3288_CLKGATE_CON(2), 3, GFLAGS),
-	COMPOSITE_NOMUX(HCLK_PERI, "hclk_peri", "aclk_peri_src", 0,
+	COMPOSITE_NOMUX(0, "hclk_peri", "aclk_peri_src", CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(10), 8, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO,
 			RK3288_CLKGATE_CON(2), 2, GFLAGS),
-	GATE(ACLK_PERI, "aclk_peri", "aclk_peri_src", 0,
+	GATE(0, "aclk_peri", "aclk_peri_src", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(2), 1, GFLAGS),
 
 	/*
@@ -479,7 +481,7 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	COMPOSITE(SCLK_SDIO1, "sclk_sdio1", mux_mmc_src_p, 0,
 			RK3288_CLKSEL_CON(34), 14, 2, MFLAGS, 8, 6, DFLAGS,
 			RK3288_CLKGATE_CON(13), 2, GFLAGS),
-	COMPOSITE(SCLK_EMMC, "sclk_emmc", mux_mmc_src_p, 0,
+	COMPOSITE(SCLK_EMMC, "sclk_emmc", mux_mmc_src_p, CLK_IGNORE_UNUSED,
 			RK3288_CLKSEL_CON(12), 14, 2, MFLAGS, 8, 6, DFLAGS,
 			RK3288_CLKGATE_CON(13), 3, GFLAGS),
 
@@ -490,13 +492,13 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 			RK3288_CLKSEL_CON(35), 6, 2, MFLAGS, 0, 5, DFLAGS,
 			RK3288_CLKGATE_CON(4), 10, GFLAGS),
 
-	GATE(SCLK_OTGPHY0, "sclk_otgphy0", "usb480m", 0,
+	GATE(SCLK_OTGPHY0, "sclk_otgphy0", "usb480m", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(13), 4, GFLAGS),
-	GATE(SCLK_OTGPHY1, "sclk_otgphy1", "usb480m", 0,
+	GATE(SCLK_OTGPHY1, "sclk_otgphy1", "usb480m", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(13), 5, GFLAGS),
-	GATE(SCLK_OTGPHY2, "sclk_otgphy2", "usb480m", 0,
+	GATE(SCLK_OTGPHY2, "sclk_otgphy2", "usb480m", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(13), 6, GFLAGS),
-	GATE(SCLK_OTG_ADP, "sclk_otg_adp", "xin32k", 0,
+	GATE(SCLK_OTG_ADP, "sclk_otg_adp", "xin32k", CLK_IGNORE_UNUSED,
 			RK3288_CLKGATE_CON(13), 7, GFLAGS),
 
 	COMPOSITE_NOMUX(SCLK_TSADC, "sclk_tsadc", "xin32k", 0,
@@ -601,19 +603,19 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	 */
 
 	/* aclk_cpu gates */
-	GATE(0, "sclk_intmem0", "aclk_cpu", 0, RK3288_CLKGATE_CON(10), 5, GFLAGS),
-	GATE(0, "sclk_intmem1", "aclk_cpu", 0, RK3288_CLKGATE_CON(10), 6, GFLAGS),
-	GATE(0, "sclk_intmem2", "aclk_cpu", 0, RK3288_CLKGATE_CON(10), 7, GFLAGS),
+	GATE(0, "sclk_intmem0", "aclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(10), 5, GFLAGS),
+	GATE(0, "sclk_intmem1", "aclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(10), 6, GFLAGS),
+	GATE(0, "sclk_intmem2", "aclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(10), 7, GFLAGS),
 	GATE(ACLK_DMAC1, "aclk_dmac1", "aclk_cpu", 0, RK3288_CLKGATE_CON(10), 12, GFLAGS),
-	GATE(0, "aclk_strc_sys", "aclk_cpu", 0, RK3288_CLKGATE_CON(10), 13, GFLAGS),
-	GATE(0, "aclk_intmem", "aclk_cpu", 0, RK3288_CLKGATE_CON(10), 4, GFLAGS),
+	GATE(0, "aclk_strc_sys", "aclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(10), 13, GFLAGS),
+	GATE(0, "aclk_intmem", "aclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(10), 4, GFLAGS),
 	GATE(ACLK_CRYPTO, "aclk_crypto", "aclk_cpu", 0, RK3288_CLKGATE_CON(11), 6, GFLAGS),
 	GATE(0, "aclk_ccp", "aclk_cpu", 0, RK3288_CLKGATE_CON(11), 8, GFLAGS),
 
 	/* hclk_cpu gates */
 	GATE(HCLK_CRYPTO, "hclk_crypto", "hclk_cpu", 0, RK3288_CLKGATE_CON(11), 7, GFLAGS),
 	GATE(HCLK_I2S0, "hclk_i2s0", "hclk_cpu", 0, RK3288_CLKGATE_CON(10), 8, GFLAGS),
-	GATE(HCLK_ROM, "hclk_rom", "hclk_cpu", 0, RK3288_CLKGATE_CON(10), 9, GFLAGS),
+	GATE(HCLK_ROM, "hclk_rom", "hclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(10), 9, GFLAGS),
 	GATE(HCLK_SPDIF, "hclk_spdif", "hclk_cpu", 0, RK3288_CLKGATE_CON(10), 10, GFLAGS),
 	GATE(HCLK_SPDIF8CH, "hclk_spdif_8ch", "hclk_cpu", 0, RK3288_CLKGATE_CON(10), 11, GFLAGS),
 
@@ -622,42 +624,42 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	GATE(PCLK_TIMER, "pclk_timer", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 1, GFLAGS),
 	GATE(PCLK_I2C0, "pclk_i2c0", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 2, GFLAGS),
 	GATE(PCLK_I2C2, "pclk_i2c2", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 3, GFLAGS),
-	GATE(0, "pclk_ddrupctl0", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 14, GFLAGS),
-	GATE(0, "pclk_publ0", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 15, GFLAGS),
-	GATE(0, "pclk_ddrupctl1", "pclk_cpu", 0, RK3288_CLKGATE_CON(11), 0, GFLAGS),
-	GATE(0, "pclk_publ1", "pclk_cpu", 0, RK3288_CLKGATE_CON(11), 1, GFLAGS),
+	GATE(0, "pclk_ddrupctl0", "pclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(10), 14, GFLAGS),
+	GATE(0, "pclk_publ0", "pclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(10), 15, GFLAGS),
+	GATE(0, "pclk_ddrupctl1", "pclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(11), 0, GFLAGS),
+	GATE(0, "pclk_publ1", "pclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(11), 1, GFLAGS),
 	GATE(0, "pclk_efuse_1024", "pclk_cpu", 0, RK3288_CLKGATE_CON(11), 2, GFLAGS),
 	GATE(PCLK_TZPC, "pclk_tzpc", "pclk_cpu", 0, RK3288_CLKGATE_CON(11), 3, GFLAGS),
-	GATE(PCLK_UART2, "pclk_uart2", "pclk_cpu", 0, RK3288_CLKGATE_CON(11), 9, GFLAGS),
+	GATE(PCLK_UART2, "pclk_uart2", "pclk_cpu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(11), 9, GFLAGS),
 	GATE(0, "pclk_efuse_256", "pclk_cpu", 0, RK3288_CLKGATE_CON(11), 10, GFLAGS),
 	GATE(PCLK_RKPWM, "pclk_rkpwm", "pclk_cpu", 0, RK3288_CLKGATE_CON(11), 11, GFLAGS),
 
 	/* ddrctrl [DDR Controller PHY clock] gates */
-	GATE(0, "nclk_ddrupctl0", "ddrphy", 0, RK3288_CLKGATE_CON(11), 4, GFLAGS),
-	GATE(0, "nclk_ddrupctl1", "ddrphy", 0, RK3288_CLKGATE_CON(11), 5, GFLAGS),
+	GATE(0, "nclk_ddrupctl0", "ddrphy", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(11), 4, GFLAGS),
+	GATE(0, "nclk_ddrupctl1", "ddrphy", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(11), 5, GFLAGS),
 
 	/* ddrphy gates */
-	GATE(0, "sclk_ddrphy0", "ddrphy", 0, RK3288_CLKGATE_CON(4), 12, GFLAGS),
-	GATE(0, "sclk_ddrphy1", "ddrphy", 0, RK3288_CLKGATE_CON(4), 13, GFLAGS),
+	GATE(0, "sclk_ddrphy0", "ddrphy", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(4), 12, GFLAGS),
+	GATE(0, "sclk_ddrphy1", "ddrphy", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(4), 13, GFLAGS),
 
 	/* aclk_peri gates */
-	GATE(0, "aclk_peri_axi_matrix", "aclk_peri", 0, RK3288_CLKGATE_CON(6), 2, GFLAGS),
+	GATE(0, "aclk_peri_axi_matrix", "aclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(6), 2, GFLAGS),
 	GATE(ACLK_DMAC2, "aclk_dmac2", "aclk_peri", 0, RK3288_CLKGATE_CON(6), 3, GFLAGS),
-	GATE(0, "aclk_peri_niu", "aclk_peri", 0, RK3288_CLKGATE_CON(7), 11, GFLAGS),
-	GATE(ACLK_MMU, "aclk_mmu", "aclk_peri", 0, RK3288_CLKGATE_CON(8), 12, GFLAGS),
+	GATE(0, "aclk_peri_niu", "aclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(7), 11, GFLAGS),
+	GATE(ACLK_MMU, "aclk_mmu", "aclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(8), 12, GFLAGS),
 	GATE(ACLK_GMAC, "aclk_gmac", "aclk_peri", 0, RK3288_CLKGATE_CON(8), 0, GFLAGS),
 	GATE(HCLK_GPS, "hclk_gps", "aclk_peri", 0, RK3288_CLKGATE_CON(8), 2, GFLAGS),
 
 	/* hclk_peri gates */
-	GATE(0, "hclk_peri_matrix", "hclk_peri", 0, RK3288_CLKGATE_CON(6), 0, GFLAGS),
+	GATE(0, "hclk_peri_matrix", "hclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(6), 0, GFLAGS),
 	GATE(HCLK_OTG0, "hclk_otg0", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 4, GFLAGS),
 	GATE(HCLK_USBHOST0, "hclk_host0", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 6, GFLAGS),
 	GATE(HCLK_USBHOST1, "hclk_host1", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 7, GFLAGS),
 	GATE(HCLK_HSIC, "hclk_hsic", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 8, GFLAGS),
-	GATE(0, "hclk_usb_peri", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 9, GFLAGS),
-	GATE(0, "hclk_peri_ahb_arbi", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 10, GFLAGS),
-	GATE(0, "hclk_emem", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 12, GFLAGS),
-	GATE(0, "hclk_mem", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 13, GFLAGS),
+	GATE(0, "hclk_usb_peri", "hclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(7), 9, GFLAGS),
+	GATE(0, "hclk_peri_ahb_arbi", "hclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(7), 10, GFLAGS),
+	GATE(0, "hclk_emem", "hclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(7), 12, GFLAGS),
+	GATE(0, "hclk_mem", "hclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(7), 13, GFLAGS),
 	GATE(HCLK_NANDC0, "hclk_nandc0", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 14, GFLAGS),
 	GATE(HCLK_NANDC1, "hclk_nandc1", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 15, GFLAGS),
 	GATE(HCLK_TSP, "hclk_tsp", "hclk_peri", 0, RK3288_CLKGATE_CON(8), 8, GFLAGS),
@@ -669,7 +671,7 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	GATE(0, "pmu_hclk_otg0", "hclk_peri", 0, RK3288_CLKGATE_CON(7), 5, GFLAGS),
 
 	/* pclk_peri gates */
-	GATE(0, "pclk_peri_matrix", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 1, GFLAGS),
+	GATE(0, "pclk_peri_matrix", "pclk_peri", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(6), 1, GFLAGS),
 	GATE(PCLK_SPI0, "pclk_spi0", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 4, GFLAGS),
 	GATE(PCLK_SPI1, "pclk_spi1", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 5, GFLAGS),
 	GATE(PCLK_SPI2, "pclk_spi2", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 6, GFLAGS),
@@ -705,22 +707,22 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	GATE(PCLK_GPIO4, "pclk_gpio4", "pclk_pd_alive", 0, RK3288_CLKGATE_CON(14), 4, GFLAGS),
 	GATE(PCLK_GPIO5, "pclk_gpio5", "pclk_pd_alive", 0, RK3288_CLKGATE_CON(14), 5, GFLAGS),
 	GATE(PCLK_GPIO6, "pclk_gpio6", "pclk_pd_alive", 0, RK3288_CLKGATE_CON(14), 6, GFLAGS),
-	GATE(PCLK_GRF, "pclk_grf", "pclk_pd_alive", 0, RK3288_CLKGATE_CON(14), 11, GFLAGS),
-	GATE(0, "pclk_alive_niu", "pclk_pd_alive", 0, RK3288_CLKGATE_CON(14), 12, GFLAGS),
+	GATE(PCLK_GRF, "pclk_grf", "pclk_pd_alive", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(14), 11, GFLAGS),
+	GATE(0, "pclk_alive_niu", "pclk_pd_alive", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(14), 12, GFLAGS),
 
 	/* pclk_pd_pmu gates */
-	GATE(PCLK_PMU, "pclk_pmu", "pclk_pd_pmu", 0, RK3288_CLKGATE_CON(17), 0, GFLAGS),
-	GATE(0, "pclk_intmem1", "pclk_pd_pmu", 0, RK3288_CLKGATE_CON(17), 1, GFLAGS),
-	GATE(0, "pclk_pmu_niu", "pclk_pd_pmu", 0, RK3288_CLKGATE_CON(17), 2, GFLAGS),
-	GATE(PCLK_SGRF, "pclk_sgrf", "pclk_pd_pmu", 0, RK3288_CLKGATE_CON(17), 3, GFLAGS),
+	GATE(PCLK_PMU, "pclk_pmu", "pclk_pd_pmu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(17), 0, GFLAGS),
+	GATE(0, "pclk_intmem1", "pclk_pd_pmu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(17), 1, GFLAGS),
+	GATE(0, "pclk_pmu_niu", "pclk_pd_pmu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(17), 2, GFLAGS),
+	GATE(PCLK_SGRF, "pclk_sgrf", "pclk_pd_pmu", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(17), 3, GFLAGS),
 	GATE(PCLK_GPIO0, "pclk_gpio0", "pclk_pd_pmu", 0, RK3288_CLKGATE_CON(17), 4, GFLAGS),
 
 	/* hclk_vio gates */
 	GATE(HCLK_RGA, "hclk_rga", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 1, GFLAGS),
 	GATE(HCLK_VOP0, "hclk_vop0", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 6, GFLAGS),
-	GATE(HCLK_VOP1, "hclk_vop1", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 8, GFLAGS),
-	GATE(HCLK_VIO_AHB_ARBI, "hclk_vio_ahb_arbi", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 9, GFLAGS),
-	GATE(HCLK_VIO_NIU, "hclk_vio_niu", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 10, GFLAGS),
+	GATE(HCLK_VOP1, "hclk_vop1", "hclk_vio", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(15), 8, GFLAGS),
+	GATE(HCLK_VIO_AHB_ARBI, "hclk_vio_ahb_arbi", "hclk_vio", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(15), 9, GFLAGS),
+	GATE(HCLK_VIO_NIU, "hclk_vio_niu", "hclk_vio", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(15), 10, GFLAGS),
 	GATE(HCLK_VIP, "hclk_vip", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 15, GFLAGS),
 	GATE(HCLK_IEP, "hclk_iep", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 3, GFLAGS),
 	GATE(HCLK_ISP, "hclk_isp", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 1, GFLAGS),
@@ -729,7 +731,7 @@  static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 	GATE(PCLK_MIPI_DSI1, "pclk_mipi_dsi1", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 5, GFLAGS),
 	GATE(PCLK_MIPI_CSI, "pclk_mipi_csi", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 6, GFLAGS),
 	GATE(PCLK_LVDS_PHY, "pclk_lvds_phy", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 7, GFLAGS),
-	GATE(PCLK_EDP_CTRL, "pclk_edp_ctrl", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 8, GFLAGS),
+	GATE(PCLK_EDP_CTRL, "pclk_edp_ctrl", "hclk_vio", CLK_IGNORE_UNUSED, RK3288_CLKGATE_CON(16), 8, GFLAGS),
 	GATE(PCLK_HDMI_CTRL, "pclk_hdmi_ctrl", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 9, GFLAGS),
 	GATE(PCLK_VIO2_H2P, "pclk_vio2_h2p", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 11, GFLAGS),
 
diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
index 1e68bff..dec6f8d6 100644
--- a/drivers/clk/rockchip/clk.c
+++ b/drivers/clk/rockchip/clk.c
@@ -246,9 +246,6 @@  void __init rockchip_clk_register_branches(
 					list->div_flags, &clk_lock);
 			break;
 		case branch_fraction_divider:
-			/* keep all gates untouched for now */
-			flags |= CLK_IGNORE_UNUSED;
-
 			clk = rockchip_clk_register_frac_branch(list->name,
 				list->parent_names, list->num_parents,
 				reg_base, list->muxdiv_offset, list->div_flags,
@@ -258,18 +255,12 @@  void __init rockchip_clk_register_branches(
 		case branch_gate:
 			flags |= CLK_SET_RATE_PARENT;
 
-			/* keep all gates untouched for now */
-			flags |= CLK_IGNORE_UNUSED;
-
 			clk = clk_register_gate(NULL, list->name,
 				list->parent_names[0], flags,
 				reg_base + list->gate_offset,
 				list->gate_shift, list->gate_flags, &clk_lock);
 			break;
 		case branch_composite:
-			/* keep all gates untouched for now */
-			flags |= CLK_IGNORE_UNUSED;
-
 			clk = rockchip_clk_register_branch(list->name,
 				list->parent_names, list->num_parents,
 				reg_base, list->muxdiv_offset, list->mux_shift,