linux-kernel - [PATCH] arm64: dts: qcom: msm8996pro-xiaomi-scorpio: Remove DSI PHY clocks from MMCC

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Date:   Mon,  7 Nov 2022 14:40:17 +0300
From:   Yassine Oudjana <yassine.oudjana@...il.com>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Yassine Oudjana <yassine.oudjana@...il.com>,
        phone-devel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yassine Oudjana <y.oudjana@...tonmail.com>
Subject: [PATCH] arm64: dts: qcom: msm8996pro-xiaomi-scorpio: Remove DSI PHY clocks from MMCC

From: Yassine Oudjana <y.oudjana@...tonmail.com>

Having DSI PHY clocks listed in the MMCC node while MDSS is disabled makes
it defer probe indefinitely, resulting in simplefb and other blocks that
depend on its clocks to defer probe as well. Remove DSI PHY clocks from
MMCC to let it probe with MDSS disabled.

Fixes: 48aa636285ad ("arm64: dts: qcom: msm8996: add clocks to the MMCC device node")
Signed-off-by: Yassine Oudjana <y.oudjana@...tonmail.com>
---
 .../boot/dts/qcom/msm8996pro-xiaomi-scorpio.dts     | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8996pro-xiaomi-scorpio.dts b/arch/arm64/boot/dts/qcom/msm8996pro-xiaomi-scorpio.dts
index 7bf6ad1a214b..c68c2dadd7b4 100644
--- a/arch/arm64/boot/dts/qcom/msm8996pro-xiaomi-scorpio.dts
+++ b/arch/arm64/boot/dts/qcom/msm8996pro-xiaomi-scorpio.dts
@@ -113,6 +113,19 @@ &mdss {
 	status = "disabled";
 };
 
+&mmcc {
+	/*
+	 * Remove non-essential DSI PHY clocks to allow MMCC to probe
+	 * with MDSS disabled.
+	 */
+	clocks = <&xo_board>,
+		 <&gcc GCC_MMSS_NOC_CFG_AHB_CLK>,
+		 <&gcc GPLL0>;
+	clock-names = "xo",
+		      "gcc_mmss_noc_cfg_ahb_clk",
+		      "gpll0";
+};
+
 &mss_pil {
 	firmware-name = "qcom/msm8996/scorpio/mba.mbn",
 			"qcom/msm8996/scorpio/modem.mbn";
-- 
2.38.1