[PATCH v3 3/4] pwm: meson: change clk/pwm gate from mask to bit

Martin Blumenstingl martin.blumenstingl at googlemail.com
Wed Apr 12 13:47:05 PDT 2023


Hi Heiner,

On Wed, Apr 12, 2023 at 9:23 PM Heiner Kallweit <hkallweit1 at gmail.com> wrote:
>
> Change single-bit values from mask to bit. This facilitates
> CCF initialization for the clock gate in a follow-up patch.
>
> Signed-off-by: Heiner Kallweit <hkallweit1 at gmail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl at googlemail.com> #
meson8b-odroidc1, sm1-x96-air

[...]
>  #define REG_MISC_AB            0x8
> -#define MISC_B_CLK_EN          BIT(23)
> -#define MISC_A_CLK_EN          BIT(15)
> +#define MISC_B_CLK_EN          23
> +#define MISC_A_CLK_EN          15
>  #define MISC_CLK_DIV_MASK      0x7f
>  #define MISC_B_CLK_DIV_SHIFT   16
>  #define MISC_A_CLK_DIV_SHIFT   8
>  #define MISC_B_CLK_SEL_SHIFT   6
>  #define MISC_A_CLK_SEL_SHIFT   4
>  #define MISC_CLK_SEL_MASK      0x3
> -#define MISC_B_EN              BIT(1)
> -#define MISC_A_EN              BIT(0)
> +#define MISC_B_EN              1
> +#define MISC_A_EN              0
Personally I'm fine with this change but it's not how I would have done it:
- I would have kept the BIT() macro for MISC_{A,B}_EN
- then I would have renamed MISC_{A,}_CLK_EN to
MISC_{A,B}_CLK_EN_SHIFT (to be consistent with _SHIFT of the mux and
divider) and drop the BIT() macro there (like you did)

This is possibly/likely personal preference, so my suggestion is to
wait for some more feedback.


Best regards,
Martin



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