linux-kernel - Re: [PATCH v2 01/15] clk: qcom: branch: Add a helper for setting the enable bit

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Message-ID: <cc8b9eea-ea4c-4943-a0f2-c2a791903440@nexus-software.ie>
Date:   Wed, 29 Nov 2023 20:53:56 +0000
From:   Bryan O'Donoghue <pure.logic@...us-software.ie>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: Re: [PATCH v2 01/15] clk: qcom: branch: Add a helper for setting the
 enable bit

On 29/11/2023 18:59, Konrad Dybcio wrote:
> We hardcode some clocks to be always-on, as they're essential to the
> functioning of the SoC / some peripherals. Add a helper to do so
> to make the writes less magic.
> 
> Reviewed-by: Johan Hovold <johan+linaro@...nel.org>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   drivers/clk/qcom/clk-branch.h | 7 +++++++
>   1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h
> index 0cf800b9d08d..155818cc8d49 100644
> --- a/drivers/clk/qcom/clk-branch.h
> +++ b/drivers/clk/qcom/clk-branch.h
> @@ -47,6 +47,7 @@ struct clk_branch {
>   #define CBCR_FORCE_MEM_PERIPH_OFF	BIT(12)
>   #define CBCR_WAKEUP			GENMASK(11, 8)
>   #define CBCR_SLEEP			GENMASK(7, 4)
> +#define CBCR_CLOCK_ENABLE		BIT(0)
>   
>   static inline void qcom_branch_set_force_mem_core(struct regmap *regmap,
>   						  struct clk_branch clk, bool on)
> @@ -81,6 +82,12 @@ static inline void qcom_branch_set_sleep(struct regmap *regmap, struct clk_branc
>   			   FIELD_PREP(CBCR_SLEEP, val));
>   }
>   
> +static inline void qcom_branch_set_clk_en(struct regmap *regmap, u32 cbcr)
> +{
> +	regmap_update_bits(regmap, cbcr, CBCR_CLOCK_ENABLE,
> +			   CBCR_CLOCK_ENABLE);
> +}
> +
>   extern const struct clk_ops clk_branch_ops;
>   extern const struct clk_ops clk_branch2_ops;
>   extern const struct clk_ops clk_branch_simple_ops;
> 
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>