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arm64: dts: imx8mq: Add clock parents for mipi dphy

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This makes sure the clock tree setup for the dphy is not dependent on
other components.

Without this change bringing up the display can fail like

  kernel: phy phy-30a00300.dphy.2: Invalid CM/CN/CO values: 165/217/1
  kernel: phy phy-30a00300.dphy.2: for hs_clk/ref_clk=451656000/593999998 ~ 165/217

if LCDIF doesn't set up that part of the clock tree first. This was
noticed when testing the Librem 5 devkit with defconfig. It doesn't
happen when modules are built in.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Guido Günther 2021-01-10 17:55:51 +01:00 committed by Shawn Guo
parent 190621e0f6
commit 62270eeb2b
1 changed files with 8 additions and 3 deletions

11
arch/arm64/boot/dts/freescale/imx8mq.dtsi
View File

@ -1016,9 +1016,14 @@
reg = <0x30a00300 0x100>;
clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>;
clock-names = "phy_ref";
assigned-clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>;
assigned-clock-parents = <&clk IMX8MQ_VIDEO_PLL1_OUT>;
assigned-clock-rates = <24000000>;
assigned-clocks = <&clk IMX8MQ_VIDEO_PLL1_REF_SEL>,
<&clk IMX8MQ_VIDEO_PLL1_BYPASS>,
<&clk IMX8MQ_CLK_DSI_PHY_REF>,
<&clk IMX8MQ_VIDEO_PLL1>;
assigned-clock-parents = <&clk IMX8MQ_CLK_25M>,
<&clk IMX8MQ_VIDEO_PLL1>,
<&clk IMX8MQ_VIDEO_PLL1_OUT>;
assigned-clock-rates = <0>, <0>, <24000000>, <594000000>;
#phy-cells = <0>;
power-domains = <&pgc_mipi>;
status = "disabled";