linux-kernel - [PATCH 3/8] clk: qcom: gpucc-sc8280xp: Add external supply for GX gdsc

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Message-ID: <20231220-sa8295p-gpu-v1-3-d8cdf2257f97@quicinc.com>
Date: Wed, 20 Dec 2023 19:50:37 -0800
From: Bjorn Andersson <quic_bjorande@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konrad.dybcio@...aro.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>,
        Taniya Das <quic_tdas@...cinc.com>,
        Ulf Hansson
	<ulf.hansson@...aro.org>,
        Johan Hovold <johan+linaro@...nel.org>,
        "Catalin
 Marinas" <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pm@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        "Bjorn
 Andersson" <quic_bjorande@...cinc.com>
Subject: [PATCH 3/8] clk: qcom: gpucc-sc8280xp: Add external supply for GX
 gdsc

On SA8295P and SA8540P the GFX rail is powered by a dedicated external
regulator, instead of the rpmh-controlled "gfx.lvl".

Define the "vdd-gfx" as the supply regulator for the GDSC, to cause the
gdsc logic to look for, and control, this external power supply.

Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
---
 drivers/clk/qcom/gpucc-sc8280xp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/qcom/gpucc-sc8280xp.c b/drivers/clk/qcom/gpucc-sc8280xp.c
index 8e147ee294ee..e2b3bc000c71 100644
--- a/drivers/clk/qcom/gpucc-sc8280xp.c
+++ b/drivers/clk/qcom/gpucc-sc8280xp.c
@@ -399,6 +399,7 @@ static struct gdsc gx_gdsc = {
 	},
 	.pwrsts = PWRSTS_OFF_ON,
 	.flags = CLAMP_IO | RETAIN_FF_ENABLE,
+	.supply = "vdd-gfx",
 };
 
 static struct gdsc *gpu_cc_sc8280xp_gdscs[] = {

-- 
2.25.1