linux-kernel - Re: [PATCH v2 3/3] soc: qcom: rpmhpd: add sc8280xp & sa8540p rpmh power-domains

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Message-ID: <20220427123835.hmfdu66ut3uvvtjp@halaneylaptop>
Date:   Wed, 27 Apr 2022 07:38:35 -0500
From:   Andrew Halaney <ahalaney@...hat.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Johan Hovold <johan+linaro@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] soc: qcom: rpmhpd: add sc8280xp & sa8540p rpmh
 power-domains

On Tue, Apr 26, 2022 at 04:35:08PM -0700, Bjorn Andersson wrote:
> The Qualcomm sc8280xp platform has 13 and the sa8540p platform has 11
> power-domains. Add compatibles, the typically used ones power-domains
> and their relevant active-only variants, to the RPMh power-domain
> driver.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
> 
> Changes since v1:
> - Added QPHY
> - Split out sa8540
> - Sorted the entries alphabetically
> 
>  drivers/soc/qcom/rpmhpd.c | 53 +++++++++++++++++++++++++++++++++++++++
>  1 file changed, 53 insertions(+)
> 
> diff --git a/drivers/soc/qcom/rpmhpd.c b/drivers/soc/qcom/rpmhpd.c
> index f8d28e902942..05fff8691ee3 100644
> --- a/drivers/soc/qcom/rpmhpd.c
> +++ b/drivers/soc/qcom/rpmhpd.c
> @@ -180,6 +180,36 @@ static struct rpmhpd mxc_ao = {
>  	.res_name = "mxc.lvl",
>  };
>  
> +static struct rpmhpd nsp = {
> +	.pd = { .name = "nsp", },
> +	.res_name = "nsp.lvl",
> +};
> +
> +static struct rpmhpd qphy = {
> +	.pd = { .name = "qphy", },
> +	.res_name = "qphy.lvl",
> +};
> +
> +/* SA8540P RPMH powerdomains */
> +static struct rpmhpd *sa8540p_rpmhpds[] = {
> +	[SC8280XP_CX] = &cx,
> +	[SC8280XP_CX_AO] = &cx_ao,
> +	[SC8280XP_EBI] = &ebi,
> +	[SC8280XP_GFX] = &gfx,
> +	[SC8280XP_LCX] = &lcx,
> +	[SC8280XP_LMX] = &lmx,
> +	[SC8280XP_MMCX] = &mmcx,
> +	[SC8280XP_MMCX_AO] = &mmcx_ao,
> +	[SC8280XP_MX] = &mx,
> +	[SC8280XP_MX_AO] = &mx_ao,
> +	[SC8280XP_NSP] = &nsp,
> +};
> +
> +static const struct rpmhpd_desc sa8540p_desc = {
> +	.rpmhpds = sa8540p_rpmhpds,
> +	.num_pds = ARRAY_SIZE(sa8540p_rpmhpds),
> +};
> +
>  /* SDM845 RPMH powerdomains */
>  static struct rpmhpd *sdm845_rpmhpds[] = {
>  	[SDM845_CX] = &cx_w_mx_parent,
> @@ -378,10 +408,33 @@ static const struct rpmhpd_desc sc8180x_desc = {
>  	.num_pds = ARRAY_SIZE(sc8180x_rpmhpds),
>  };
>  
> +/* SC8280xp RPMH powerdomains */
> +static struct rpmhpd *sc8280xp_rpmhpds[] = {
> +	[SC8280XP_CX] = &cx,
> +	[SC8280XP_CX_AO] = &cx_ao,
> +	[SC8280XP_EBI] = &ebi,
> +	[SC8280XP_GFX] = &gfx,
> +	[SC8280XP_LCX] = &lcx,
> +	[SC8280XP_LMX] = &lmx,
> +	[SC8280XP_MMCX] = &mmcx,
> +	[SC8280XP_MMCX_AO] = &mmcx_ao,
> +	[SC8280XP_MX] = &mx,
> +	[SC8280XP_MX_AO] = &mx_ao,
> +	[SC8280XP_NSP] = &nsp,
> +	[SC8280XP_QPHY] = &qphy,
> +};

The commit messages mention sc8280xp having 13 power domains, but here I
only count 12. Good chance I'm just missing something obvious (not
familiar with using power domains or rpmh) but I thought I should
highlight it in case that was an error.

I attempted to find where this sort of thing is defined downstream, but
failed :(

Thanks,
Andrew

> +
> +static const struct rpmhpd_desc sc8280xp_desc = {
> +	.rpmhpds = sc8280xp_rpmhpds,
> +	.num_pds = ARRAY_SIZE(sc8280xp_rpmhpds),
> +};
> +
>  static const struct of_device_id rpmhpd_match_table[] = {
> +	{ .compatible = "qcom,sa8540p-rpmhpd", .data = &sa8540p_desc },
>  	{ .compatible = "qcom,sc7180-rpmhpd", .data = &sc7180_desc },
>  	{ .compatible = "qcom,sc7280-rpmhpd", .data = &sc7280_desc },
>  	{ .compatible = "qcom,sc8180x-rpmhpd", .data = &sc8180x_desc },
> +	{ .compatible = "qcom,sc8280xp-rpmhpd", .data = &sc8280xp_desc },
>  	{ .compatible = "qcom,sdm845-rpmhpd", .data = &sdm845_desc },
>  	{ .compatible = "qcom,sdx55-rpmhpd", .data = &sdx55_desc},
>  	{ .compatible = "qcom,sdx65-rpmhpd", .data = &sdx65_desc},
> -- 
> 2.35.1
>