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SubjectRe: [PATCH v3 3/3] clk: at91: sama5d2: allow setting all PMC clock parents via DT
On 21/03/2020 22:18:04+0100, Michał Mirosław wrote:
> We need to have clocks accessible via phandle to select them
> as peripheral clock parent using assigned-clock-parents in DT.
> PLLACK and AUDIOPLLCK were missing for sama5d2. Add them.
>

If we go this route, because PLLA is available on all the SoC then it
makes sense adding it in all the PMC drivers instead of just the
sama5d2.

> Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
> ---
> v2: rebase to clk/clk-at91 branch
> v3: no changes
> ---
> drivers/clk/at91/sama5d2.c | 6 +++++-
> include/dt-bindings/clock/at91.h | 2 ++
> 2 files changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c
> index ae5e83cadb3d..b3fa2291ccd8 100644
> --- a/drivers/clk/at91/sama5d2.c
> +++ b/drivers/clk/at91/sama5d2.c
> @@ -166,7 +166,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
> if (IS_ERR(regmap))
> return;
>
> - sama5d2_pmc = pmc_data_allocate(PMC_I2S1_MUX + 1,
> + sama5d2_pmc = pmc_data_allocate(PMC_AUDIOPLLCK + 1,
> nck(sama5d2_systemck),
> nck(sama5d2_periph32ck),
> nck(sama5d2_gck), 3);
> @@ -202,6 +202,8 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
> if (IS_ERR(hw))
> goto err_free;
>
> + sama5d2_pmc->chws[PMC_PLLACK] = hw;
> +
> hw = at91_clk_register_audio_pll_frac(regmap, "audiopll_fracck",
> "mainck");
> if (IS_ERR(hw))
> @@ -217,6 +219,8 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
> if (IS_ERR(hw))
> goto err_free;
>
> + sama5d2_pmc->chws[PMC_AUDIOPLLCK] = hw;
> +
> regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
> if (IS_ERR(regmap_sfr))
> regmap_sfr = NULL;
> diff --git a/include/dt-bindings/clock/at91.h b/include/dt-bindings/clock/at91.h
> index c3f4aa6a2d29..e57362e98129 100644
> --- a/include/dt-bindings/clock/at91.h
> +++ b/include/dt-bindings/clock/at91.h
> @@ -21,6 +21,8 @@
> #define PMC_MCK2 4
> #define PMC_I2S0_MUX 5
> #define PMC_I2S1_MUX 6
> +#define PMC_PLLACK 7
> +#define PMC_AUDIOPLLCK 8
>
> #ifndef AT91_PMC_MOSCS
> #define AT91_PMC_MOSCS 0 /* MOSCS Flag */
> --
> 2.20.1
>

--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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