linux-kernel - [v1] arm64: dts: qcom: sc7280: assign DSI clock source parents

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Date:   Wed,  7 Sep 2022 17:05:53 +0530
From:   Rajeev Nandan <quic_rajeevny@...cinc.com>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     Rajeev Nandan <quic_rajeevny@...cinc.com>,
        linux-kernel@...r.kernel.org, sean@...rly.run, robdclark@...il.com,
        robh+dt@...nel.org, dmitry.baryshkov@...aro.org,
        andersson@...nel.org, agross@...nel.org,
        konrad.dybcio@...ainline.org, quic_abhinavk@...cinc.com,
        quic_kalyant@...cinc.com
Subject: [v1] arm64: dts: qcom: sc7280: assign DSI clock source parents

Assign DSI clock source parents to DSI PHY clocks.

Signed-off-by: Rajeev Nandan <quic_rajeevny@...cinc.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---

This change is needed after the refactor done by the patch [2] 
(drm/msm/dsi: stop setting clock parents manually) of series [1],
to fix the DSI pixel clock set rate error:
  dsi_link_clk_set_rate_6g: Failed to set rate pixel clk, -22
  msm_dsi_host_power_on: failed to enable link clocks. ret=-22

[1] https://github.com/torvalds/linux/commit/9b077c1581cf57206f5f7788ea569e8fae0719a7
[2] https://lore.kernel.org/all/20210709210729.953114-1-dmitry.baryshkov@linaro.org/

 arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
index 50c3d79..a80aa64 100644
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -3650,6 +3650,9 @@
 					      "iface",
 					      "bus";
 
+				assigned-clocks = <&dispcc DISP_CC_MDSS_BYTE0_CLK_SRC>, <&dispcc DISP_CC_MDSS_PCLK0_CLK_SRC>;
+				assigned-clock-parents = <&mdss_dsi_phy 0>, <&mdss_dsi_phy 1>;
+
 				operating-points-v2 = <&dsi_opp_table>;
 				power-domains = <&rpmhpd SC7280_CX>;
 
-- 
2.7.4