diff mbox series

[1/2] clk: meson-g12a: add cpu clock bindings

Message ID 20190301102140.7181-2-narmstrong@baylibre.com (mailing list archive)
State Superseded
Headers show
Series clk: meson: g12a: Add CPU Clock support | expand

Commit Message

Neil Armstrong March 1, 2019, 10:21 a.m. UTC
Add Amlogic G12A Family CPU clocks bindings, only export CPU_CLK since
it should be the only ID used.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/clk/meson/g12a.h              | 24 +++++++++++++++++++++++-
 include/dt-bindings/clock/g12a-clkc.h |  1 +
 2 files changed, 24 insertions(+), 1 deletion(-)

Comments

Martin Blumenstingl March 1, 2019, 3:26 p.m. UTC | #1
Hi Neil,

On Fri, Mar 1, 2019 at 11:22 AM Neil Armstrong <narmstrong@baylibre.com> wrote:
>
> Add Amlogic G12A Family CPU clocks bindings, only export CPU_CLK since
> it should be the only ID used.
is this also true for the CPU post-dividers (APB, ATB, AXI, CPU CLK TRACE)?

> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
>  drivers/clk/meson/g12a.h              | 24 +++++++++++++++++++++++-
>  include/dt-bindings/clock/g12a-clkc.h |  1 +
>  2 files changed, 24 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/clk/meson/g12a.h b/drivers/clk/meson/g12a.h
> index f399dfe1401c..4854750df902 100644
> --- a/drivers/clk/meson/g12a.h
> +++ b/drivers/clk/meson/g12a.h
> @@ -166,8 +166,30 @@
>  #define CLKID_MALI_0_DIV                       170
>  #define CLKID_MALI_1_DIV                       173
>  #define CLKID_MPLL_5OM_DIV                     176
> +#define CLKID_PCIE_PLL_DCO                     178
> +#define CLKID_PCIE_PLL_DCO_DIV2                        179
> +#define CLKID_PCIE_PLL_OD                      180
how are these PCIe clock related to the CPU clocks?

> +#define CLKID_SYS_PLL_DIV16_EN                 181
> +#define CLKID_SYS_PLL_DIV16                    182
> +#define CLKID_CPU_CLK_DYN0_SEL                 183
> +#define CLKID_CPU_CLK_DYN0_DIV                 184
> +#define CLKID_CPU_CLK_DYN0                     185
> +#define CLKID_CPU_CLK_DYN1_SEL                 186
> +#define CLKID_CPU_CLK_DYN1_DIV                 187
> +#define CLKID_CPU_CLK_DYN1                     188
> +#define CLKID_CPU_CLK_DYN                      189
> +#define CLKID_CPU_CLK_DIV16_EN                 191
> +#define CLKID_CPU_CLK_DIV16                    192
> +#define CLKID_CPU_CLK_APB_DIV                  193
> +#define CLKID_CPU_CLK_APB                      194
> +#define CLKID_CPU_CLK_ATB_DIV                  195
> +#define CLKID_CPU_CLK_ATB                      196
> +#define CLKID_CPU_CLK_AXI_DIV                  197
> +#define CLKID_CPU_CLK_AXI                      198
> +#define CLKID_CPU_CLK_TRACE_DIV                        299
> +#define CLKID_CPU_CLK_TRACE                    200
>
> -#define NR_CLKS                                        178
> +#define NR_CLKS                                        201
shouldn't all changes to this file (drivers/clk/meson/g12a.h) be part
of the patch which adds the actual clocks so the dt-bindings patch is
independent of the clock driver patches?
in this case the subject should also be updated to "dt-bindings:
clock: g12a: ..."


Regards
Martin
Neil Armstrong March 1, 2019, 4:43 p.m. UTC | #2
Hi Martin,

On 01/03/2019 16:26, Martin Blumenstingl wrote:
> Hi Neil,
> 
> On Fri, Mar 1, 2019 at 11:22 AM Neil Armstrong <narmstrong@baylibre.com> wrote:
>>
>> Add Amlogic G12A Family CPU clocks bindings, only export CPU_CLK since
>> it should be the only ID used.
> is this also true for the CPU post-dividers (APB, ATB, AXI, CPU CLK TRACE)?

Do we need these to be exported ?

> 
>> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
>> ---
>>  drivers/clk/meson/g12a.h              | 24 +++++++++++++++++++++++-
>>  include/dt-bindings/clock/g12a-clkc.h |  1 +
>>  2 files changed, 24 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/clk/meson/g12a.h b/drivers/clk/meson/g12a.h
>> index f399dfe1401c..4854750df902 100644
>> --- a/drivers/clk/meson/g12a.h
>> +++ b/drivers/clk/meson/g12a.h
>> @@ -166,8 +166,30 @@
>>  #define CLKID_MALI_0_DIV                       170
>>  #define CLKID_MALI_1_DIV                       173
>>  #define CLKID_MPLL_5OM_DIV                     176
>> +#define CLKID_PCIE_PLL_DCO                     178
>> +#define CLKID_PCIE_PLL_DCO_DIV2                        179
>> +#define CLKID_PCIE_PLL_OD                      180
> how are these PCIe clock related to the CPU clocks?

Oops, bad merge...

> 
>> +#define CLKID_SYS_PLL_DIV16_EN                 181
>> +#define CLKID_SYS_PLL_DIV16                    182
>> +#define CLKID_CPU_CLK_DYN0_SEL                 183
>> +#define CLKID_CPU_CLK_DYN0_DIV                 184
>> +#define CLKID_CPU_CLK_DYN0                     185
>> +#define CLKID_CPU_CLK_DYN1_SEL                 186
>> +#define CLKID_CPU_CLK_DYN1_DIV                 187
>> +#define CLKID_CPU_CLK_DYN1                     188
>> +#define CLKID_CPU_CLK_DYN                      189
>> +#define CLKID_CPU_CLK_DIV16_EN                 191
>> +#define CLKID_CPU_CLK_DIV16                    192
>> +#define CLKID_CPU_CLK_APB_DIV                  193
>> +#define CLKID_CPU_CLK_APB                      194
>> +#define CLKID_CPU_CLK_ATB_DIV                  195
>> +#define CLKID_CPU_CLK_ATB                      196
>> +#define CLKID_CPU_CLK_AXI_DIV                  197
>> +#define CLKID_CPU_CLK_AXI                      198
>> +#define CLKID_CPU_CLK_TRACE_DIV                        299
>> +#define CLKID_CPU_CLK_TRACE                    200
>>
>> -#define NR_CLKS                                        178
>> +#define NR_CLKS                                        201
> shouldn't all changes to this file (drivers/clk/meson/g12a.h) be part
> of the patch which adds the actual clocks so the dt-bindings patch is
> independent of the clock driver patches?
> in this case the subject should also be updated to "dt-bindings:
> clock: g12a: ..."

I don't have any opinion, Jerome ?

> 
> 
> Regards
> Martin
> 

Thanks !

Neil
Martin Blumenstingl March 1, 2019, 5:05 p.m. UTC | #3
Hi Neil,

On Fri, Mar 1, 2019 at 5:43 PM Neil Armstrong <narmstrong@baylibre.com> wrote:
>
> Hi Martin,
>
> On 01/03/2019 16:26, Martin Blumenstingl wrote:
> > Hi Neil,
> >
> > On Fri, Mar 1, 2019 at 11:22 AM Neil Armstrong <narmstrong@baylibre.com> wrote:
> >>
> >> Add Amlogic G12A Family CPU clocks bindings, only export CPU_CLK since
> >> it should be the only ID used.
> > is this also true for the CPU post-dividers (APB, ATB, AXI, CPU CLK TRACE)?
>
> Do we need these to be exported ?
I'm not sure as I couldn't find more details about APB, ATB and AXI on G12A:
- APB and ATB may be needed by the CoreSight bindings
(Documentation/devicetree/bindings/arm/coresight.txt)
- AXI may be needed by the VPU driver (the S912 datasheet mentions in
OSD1_AFBCD_ENABLE: "id_fifo_thrd : unsigned , default = 64, axi id
fifo threshold")

if you don't know either then I'm fine with skipping them for now, we
can still export them later.


Martin
diff mbox series

Patch

diff --git a/drivers/clk/meson/g12a.h b/drivers/clk/meson/g12a.h
index f399dfe1401c..4854750df902 100644
--- a/drivers/clk/meson/g12a.h
+++ b/drivers/clk/meson/g12a.h
@@ -166,8 +166,30 @@ 
 #define CLKID_MALI_0_DIV			170
 #define CLKID_MALI_1_DIV			173
 #define CLKID_MPLL_5OM_DIV			176
+#define CLKID_PCIE_PLL_DCO			178
+#define CLKID_PCIE_PLL_DCO_DIV2			179
+#define CLKID_PCIE_PLL_OD			180
+#define CLKID_SYS_PLL_DIV16_EN			181
+#define CLKID_SYS_PLL_DIV16			182
+#define CLKID_CPU_CLK_DYN0_SEL			183
+#define CLKID_CPU_CLK_DYN0_DIV			184
+#define CLKID_CPU_CLK_DYN0			185
+#define CLKID_CPU_CLK_DYN1_SEL			186
+#define CLKID_CPU_CLK_DYN1_DIV			187
+#define CLKID_CPU_CLK_DYN1			188
+#define CLKID_CPU_CLK_DYN			189
+#define CLKID_CPU_CLK_DIV16_EN			191
+#define CLKID_CPU_CLK_DIV16			192
+#define CLKID_CPU_CLK_APB_DIV			193
+#define CLKID_CPU_CLK_APB			194
+#define CLKID_CPU_CLK_ATB_DIV			195
+#define CLKID_CPU_CLK_ATB			196
+#define CLKID_CPU_CLK_AXI_DIV			197
+#define CLKID_CPU_CLK_AXI			198
+#define CLKID_CPU_CLK_TRACE_DIV			299
+#define CLKID_CPU_CLK_TRACE			200
 
-#define NR_CLKS					178
+#define NR_CLKS					201
 
 /* include the CLKIDs that have been made part of the DT binding */
 #include <dt-bindings/clock/g12a-clkc.h>
diff --git a/include/dt-bindings/clock/g12a-clkc.h b/include/dt-bindings/clock/g12a-clkc.h
index 83b657038d1e..33aba232282c 100644
--- a/include/dt-bindings/clock/g12a-clkc.h
+++ b/include/dt-bindings/clock/g12a-clkc.h
@@ -131,5 +131,6 @@ 
 #define CLKID_MALI_1				174
 #define CLKID_MALI				175
 #define CLKID_MPLL_5OM				177
+#define CLKID_CPU_CLK				190
 
 #endif /* __G12A_CLKC_H */