| Message ID | 20221124191643.3193423-2-biju.das.jz@bp.renesas.com (mailing list archive) |
|---|---|
| State | Awaiting Upstream, archived |
| Headers | show |
| Series | Add RZ/V2{M, MA} PWM driver support | expand |
On Thu, Nov 24, 2022 at 8:16 PM Biju Das <biju.das.jz@bp.renesas.com> wrote: > Add PWM{8..14} clock and reset entries to CPG driver. > > The PWM IP on the RZ/V2M comes with 16 channels, but the ISP has > full control of channels 0 to 7, and channel 15, therefore Linux > is only allowed to use channels 8 to 14. > > The PWM channel 15 shares apb clock and reset with PWM{8..14}. > The reset is deasserted by the bootloader/ISP. > > Add PWM{8..14} clocks to CPG driver and mark apb clock as > critical clock, so that the apb clock will be always on. > > Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> > --- > v1->v2: > * Updated commit description > * Replaced pwm8_15_pclk->cperi_grpf > * Added reset entry R9A09G011_PWM_GPF_PRESETN Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> i.e. will queue in renesas-clk-for-v6.3. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
On Thu, Dec 1, 2022 at 9:34 AM Geert Uytterhoeven <geert@linux-m68k.org> wrote: > On Thu, Nov 24, 2022 at 8:16 PM Biju Das <biju.das.jz@bp.renesas.com> wrote: > > Add PWM{8..14} clock and reset entries to CPG driver. > > > > The PWM IP on the RZ/V2M comes with 16 channels, but the ISP has > > full control of channels 0 to 7, and channel 15, therefore Linux > > is only allowed to use channels 8 to 14. > > > > The PWM channel 15 shares apb clock and reset with PWM{8..14}. > > The reset is deasserted by the bootloader/ISP. > > > > Add PWM{8..14} clocks to CPG driver and mark apb clock as > > critical clock, so that the apb clock will be always on. > > > > Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> > > --- > > v1->v2: > > * Updated commit description > > * Replaced pwm8_15_pclk->cperi_grpf > > * Added reset entry R9A09G011_PWM_GPF_PRESETN > > Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> > i.e. will queue in renesas-clk-for-v6.3. > > @@ -147,11 +155,13 @@ static const struct rzg2l_reset r9a09g011_resets[] = { > > DEF_RST_MON(R9A09G011_SYC_RST_N, 0x610, 9, 13), > > DEF_RST(R9A09G011_IIC_GPA_PRESETN, 0x614, 8), > > DEF_RST(R9A09G011_IIC_GPB_PRESETN, 0x614, 9), > > + DEF_RST_MON(R9A09G011_PWM_GPF_PRESETN, 0x614, 5, 23), I will move this entry up, to preserve sort order (by bit number). > > DEF_RST_MON(R9A09G011_WDT0_PRESETN, 0x614, 12, 19), > > }; Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
diff --git a/drivers/clk/renesas/r9a09g011-cpg.c b/drivers/clk/renesas/r9a09g011-cpg.c index fbef1b35d254..dd5e442ec4a9 100644 --- a/drivers/clk/renesas/r9a09g011-cpg.c +++ b/drivers/clk/renesas/r9a09g011-cpg.c @@ -136,6 +136,14 @@ static const struct rzg2l_mod_clk r9a09g011_mod_clks[] __initconst = { DEF_MOD("iic_pclk1", R9A09G011_IIC_PCLK1, CLK_SEL_E, 0x424, 12), DEF_MOD("wdt0_pclk", R9A09G011_WDT0_PCLK, CLK_SEL_E, 0x428, 12), DEF_MOD("wdt0_clk", R9A09G011_WDT0_CLK, CLK_MAIN, 0x428, 13), + DEF_MOD("cperi_grpf", R9A09G011_CPERI_GRPF_PCLK, CLK_SEL_E, 0x434, 0), + DEF_MOD("pwm8_clk", R9A09G011_PWM8_CLK, CLK_MAIN, 0x434, 4), + DEF_MOD("pwm9_clk", R9A09G011_PWM9_CLK, CLK_MAIN, 0x434, 5), + DEF_MOD("pwm10_clk", R9A09G011_PWM10_CLK, CLK_MAIN, 0x434, 6), + DEF_MOD("pwm11_clk", R9A09G011_PWM11_CLK, CLK_MAIN, 0x434, 7), + DEF_MOD("pwm12_clk", R9A09G011_PWM12_CLK, CLK_MAIN, 0x434, 8), + DEF_MOD("pwm13_clk", R9A09G011_PWM13_CLK, CLK_MAIN, 0x434, 9), + DEF_MOD("pwm14_clk", R9A09G011_PWM14_CLK, CLK_MAIN, 0x434, 10), DEF_MOD("urt_pclk", R9A09G011_URT_PCLK, CLK_SEL_E, 0x438, 4), DEF_MOD("urt0_clk", R9A09G011_URT0_CLK, CLK_SEL_W0, 0x438, 5), DEF_MOD("ca53", R9A09G011_CA53_CLK, CLK_DIV_A, 0x448, 0), @@ -147,11 +155,13 @@ static const struct rzg2l_reset r9a09g011_resets[] = { DEF_RST_MON(R9A09G011_SYC_RST_N, 0x610, 9, 13), DEF_RST(R9A09G011_IIC_GPA_PRESETN, 0x614, 8), DEF_RST(R9A09G011_IIC_GPB_PRESETN, 0x614, 9), + DEF_RST_MON(R9A09G011_PWM_GPF_PRESETN, 0x614, 5, 23), DEF_RST_MON(R9A09G011_WDT0_PRESETN, 0x614, 12, 19), }; static const unsigned int r9a09g011_crit_mod_clks[] __initconst = { MOD_CLK_BASE + R9A09G011_CA53_CLK, + MOD_CLK_BASE + R9A09G011_CPERI_GRPF_PCLK, MOD_CLK_BASE + R9A09G011_GIC_CLK, MOD_CLK_BASE + R9A09G011_SYC_CNT_CLK, MOD_CLK_BASE + R9A09G011_URT_PCLK,
Add PWM{8..14} clock and reset entries to CPG driver. The PWM IP on the RZ/V2M comes with 16 channels, but the ISP has full control of channels 0 to 7, and channel 15, therefore Linux is only allowed to use channels 8 to 14. The PWM channel 15 shares apb clock and reset with PWM{8..14}. The reset is deasserted by the bootloader/ISP. Add PWM{8..14} clocks to CPG driver and mark apb clock as critical clock, so that the apb clock will be always on. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> --- v1->v2: * Updated commit description * Replaced pwm8_15_pclk->cperi_grpf * Added reset entry R9A09G011_PWM_GPF_PRESETN --- drivers/clk/renesas/r9a09g011-cpg.c | 10 ++++++++++ 1 file changed, 10 insertions(+)