linux-kernel - Re: [PATCH 3/5] clk: qcom: clk-rpm: convert to parent

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Date:   Wed, 6 Jul 2022 15:26:53 +0200
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Christian Marangi <ansuelsmth@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.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>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] clk: qcom: clk-rpm: convert to parent_data API



On 5.07.2022 22:28, Christian Marangi wrote:
> Convert clk-rpm driver to parent_data API and change parent names to cxo
> and pxo instead of the board variant as pxo_board is an ancient name and
> pxo should be used instead.
> 
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> ---
>  drivers/clk/qcom/clk-rpm.c | 24 ++++++++++++++++--------
>  1 file changed, 16 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/clk/qcom/clk-rpm.c b/drivers/clk/qcom/clk-rpm.c
> index a18811c38018..d45a8b0fc97c 100644
> --- a/drivers/clk/qcom/clk-rpm.c
> +++ b/drivers/clk/qcom/clk-rpm.c
> @@ -23,6 +23,14 @@
>  #define QCOM_RPM_SCALING_ENABLE_ID			0x2
>  #define QCOM_RPM_XO_MODE_ON				0x2
>  
> +static const struct clk_parent_data gcc_pxo[] = {
> +	{ .fw_name = "pxo", .name = "pxo" },
The .name lookup should include _board, as the old DTs expect that.
If I understand correctly though, you need to preserve both pxo and
pxo_board, as they were separate, not sure though..

Konrad
> +};
> +
> +static const struct clk_parent_data gcc_cxo[] = {
> +	{ .fw_name = "cxo", .name = "cxo" },
> +};
> +
>  #define DEFINE_CLK_RPM(_platform, _name, _active, r_id)			      \
>  	static struct clk_rpm _platform##_##_active;			      \
>  	static struct clk_rpm _platform##_##_name = {			      \
> @@ -32,8 +40,8 @@
>  		.hw.init = &(struct clk_init_data){			      \
>  			.ops = &clk_rpm_ops,				      \
>  			.name = #_name,					      \
> -			.parent_names = (const char *[]){ "pxo_board" },      \
> -			.num_parents = 1,				      \
> +			.parent_data = gcc_pxo,				      \
> +			.num_parents = ARRAY_SIZE(gcc_pxo),		      \
>  		},							      \
>  	};								      \
>  	static struct clk_rpm _platform##_##_active = {			      \
> @@ -44,8 +52,8 @@
>  		.hw.init = &(struct clk_init_data){			      \
>  			.ops = &clk_rpm_ops,				      \
>  			.name = #_active,				      \
> -			.parent_names = (const char *[]){ "pxo_board" },      \
> -			.num_parents = 1,				      \
> +			.parent_data = gcc_pxo,				      \
> +			.num_parents = ARRAY_SIZE(gcc_pxo),		      \
>  		},							      \
>  	}
>  
> @@ -56,8 +64,8 @@
>  		.hw.init = &(struct clk_init_data){			      \
>  			.ops = &clk_rpm_xo_ops,			      \
>  			.name = #_name,					      \
> -			.parent_names = (const char *[]){ "cxo_board" },      \
> -			.num_parents = 1,				      \
> +			.parent_data = gcc_cxo,				      \
> +			.num_parents = ARRAY_SIZE(gcc_cxo),		      \
>  		},							      \
>  	}
>  
> @@ -68,8 +76,8 @@
>  		.hw.init = &(struct clk_init_data){			      \
>  			.ops = &clk_rpm_fixed_ops,			      \
>  			.name = #_name,					      \
> -			.parent_names = (const char *[]){ "pxo" },	      \
> -			.num_parents = 1,				      \
> +			.parent_data = gcc_pxo,				      \
> +			.num_parents = ARRAY_SIZE(gcc_pxo),		      \
>  		},							      \
>  	}
>