[PATCH 1/3] arm: dts: qcom: apq8064: Use 27MHz PXO clock as DSI PLL reference

Marijn Suijten
2021-08-29T20:30:41Z

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.

Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
---
arch/arm/boot/dts/qcom-apq8064.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/qcom-apq8064.dtsi b/arch/arm/boot/dts/qcom-apq8064.dtsi
index 2687c4e890ba..77659b783759 100644
--- a/arch/arm/boot/dts/qcom-apq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-apq8064.dtsi
@@ -198,7 +198,7 @@ cxo_board: cxo_board {
clock-frequency = <19200000>;
};

- pxo_board {
+ pxo_board: pxo_board {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <27000000>;
@@ -1306,7 +1306,7 @@ dsi0_phy: dsi-phy@4700200 {
reg-names = "dsi_pll", "dsi_phy", "dsi_phy_regulator";
clock-names = "iface_clk", "ref";
clocks = <&mmcc DSI_M_AHB_CLK>,
- <&cxo_board>;
+ <&pxo_board>;
};

--
2.33.0