linux-kernel - Re: [PATCH 1/2] clk: meson-g12a: add cpu clock bindings

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Date:   Fri, 1 Mar 2019 17:43:18 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     jbrunet@...libre.com, devicetree@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] clk: meson-g12a: add cpu clock bindings

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@...libre.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@...libre.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