linux-kernel - Re: [PATCH 1/4] clk: qcom: clk-alpha-pll: Add support for lucid ole pll ops

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Date:   Tue, 9 May 2023 22:06:34 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Jagadeesh Kona <quic_jkona@...cinc.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        Taniya Das <quic_tdas@...cinc.com>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] clk: qcom: clk-alpha-pll: Add support for lucid ole
 pll ops



On 9.05.2023 18:12, Jagadeesh Kona wrote:
> From: Taniya Das <quic_tdas@...cinc.com>
> 
> Add support for lucid ole pll ops to configure and control the
> lucid ole pll. The lucid ole pll has an additional test control
> register which is required to be programmed, add support to
> program the same.
> 
> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
> Signed-off-by: Jagadeesh Kona <quic_jkona@...cinc.com>
> ---
Isn't this commit "write to PLL_TEST_CTL_U2 on LUCID_EVO" instead?

Meaninglessly duplicating ops does not seem useful.

Konrad
>  drivers/clk/qcom/clk-alpha-pll.c | 2 ++
>  drivers/clk/qcom/clk-alpha-pll.h | 4 ++++
>  2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
> index b9f6535a7ba7..f81c7c561352 100644
> --- a/drivers/clk/qcom/clk-alpha-pll.c
> +++ b/drivers/clk/qcom/clk-alpha-pll.c
> @@ -55,6 +55,7 @@
>  #define PLL_TEST_CTL(p)		((p)->offset + (p)->regs[PLL_OFF_TEST_CTL])
>  #define PLL_TEST_CTL_U(p)	((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U])
>  #define PLL_TEST_CTL_U1(p)     ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U1])
> +#define PLL_TEST_CTL_U2(p)     ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U2])
>  #define PLL_STATUS(p)		((p)->offset + (p)->regs[PLL_OFF_STATUS])
>  #define PLL_OPMODE(p)		((p)->offset + (p)->regs[PLL_OFF_OPMODE])
>  #define PLL_FRAC(p)		((p)->offset + (p)->regs[PLL_OFF_FRAC])
> @@ -2096,6 +2097,7 @@ void clk_lucid_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regma
>  	clk_alpha_pll_write_config(regmap, PLL_TEST_CTL(pll), config->test_ctl_val);
>  	clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U(pll), config->test_ctl_hi_val);
>  	clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U1(pll), config->test_ctl_hi1_val);
> +	clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U2(pll), config->test_ctl_hi2_val);
>  
>  	/* Disable PLL output */
>  	regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0);
> diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
> index d07b17186b90..4d9b6d5b7062 100644
> --- a/drivers/clk/qcom/clk-alpha-pll.h
> +++ b/drivers/clk/qcom/clk-alpha-pll.h
> @@ -125,6 +125,7 @@ struct alpha_pll_config {
>  	u32 test_ctl_val;
>  	u32 test_ctl_hi_val;
>  	u32 test_ctl_hi1_val;
> +	u32 test_ctl_hi2_val;
>  	u32 main_output_mask;
>  	u32 aux_output_mask;
>  	u32 aux2_output_mask;
> @@ -171,6 +172,7 @@ extern const struct clk_ops clk_alpha_pll_zonda_ops;
>  #define clk_alpha_pll_postdiv_zonda_ops clk_alpha_pll_postdiv_fabia_ops
>  
>  extern const struct clk_ops clk_alpha_pll_lucid_evo_ops;
> +#define clk_alpha_pll_lucid_ole_ops clk_alpha_pll_lucid_evo_ops
>  extern const struct clk_ops clk_alpha_pll_reset_lucid_evo_ops;
>  #define clk_alpha_pll_reset_lucid_ole_ops clk_alpha_pll_reset_lucid_evo_ops
>  extern const struct clk_ops clk_alpha_pll_fixed_lucid_evo_ops;
> @@ -196,6 +198,8 @@ void clk_zonda_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
>  			     const struct alpha_pll_config *config);
>  void clk_lucid_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
>  				 const struct alpha_pll_config *config);
> +#define clk_lucid_ole_pll_configure(pll, regmap, config) \
> +			clk_lucid_evo_pll_configure(pll, regmap, config)
>  void clk_rivian_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
>  				  const struct alpha_pll_config *config);
>  void clk_stromer_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,