ARM: dts: qcom: apq8064: Use 27MHz PXO clock as DSI PLL reference

[ Upstream commit f1db21c315f4b4f8c3fbea56aac500673132d317 ]

The 28NM DSI PLL driver for msm8960 calculates with a 27MHz reference
clock and should hence use PXO, not CXO which runs at 19.2MHz.

Note that none of the DSI PHY/PLL drivers currently use this "ref"
clock; they all rely on (sometimes inexistant) global clock names and
usually function normally without a parent clock.  This discrepancy will
be corrected in a future patch, for which this change needs to be in
place first.

Fixes: 6969d1d9c615 ("ARM: dts: qcom-apq8064: Set 'cxo_board' as ref clock of the DSI PHY")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Link: https://lore.kernel.org/r/20210829203027.276143-2-marijn.suijten@somainline.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm/boot/dts/qcom-apq8064.dtsi b/arch/arm/boot/dts/qcom-apq8064.dtsi
index 01ea4590ffce55bd963f465e5930a559424837b8..72c4a9fc41a2013f62a64f29dc91f9ba503e30c7 100644 (file)
--- a/arch/arm/boot/dts/qcom-apq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-apq8064.dtsi
@@ -198,7 +198,7 @@
                        clock-frequency = <19200000>;
                };
 
-               pxo_board {
+               pxo_board: pxo_board {
                        compatible = "fixed-clock";
                        #clock-cells = <0>;
                        clock-frequency = <27000000>;
@@ -1305,7 +1305,7 @@
                        reg-names = "dsi_pll", "dsi_phy", "dsi_phy_regulator";
                        clock-names = "iface_clk", "ref";
                        clocks = <&mmcc DSI_M_AHB_CLK>,
-                                <&cxo_board>;
+                                <&pxo_board>;
                };