[PATCH] arm64: dts: imx8mn: Drop CSI1 PHY reference clock configuration

Marek Vasut marex at denx.de
Mon Jul 24 15:22:47 PDT 2023


The CSI1 PHY reference clock are limited to 125 MHz according to:
i.MX 8M Nano Applications Processor Reference Manual, Rev. 2, 07/2022
Table 5-1. Clock Root Table (continued) / page 319
Slice Index n = 123 .

Currently those IMX8MN_CLK_CSI1_PHY_REF clock are configured to be
fed directly from 1 GHz PLL2 , which overclocks them . Instead, drop
the configuration altogether, which defaults the clock to 24 MHz REF
clock input, which for the PHY reference clock is just fine.

Fixes: ae9279f301b5 ("arm64: dts: imx8mn: Add CSI and ISI Nodes")
Signed-off-by: Marek Vasut <marex at denx.de>
---
Cc: Adam Ford <aford173 at gmail.com>
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt at linaro.org>
Cc: Li Jun <jun.li at nxp.com>
Cc: Marco Felsch <m.felsch at pengutronix.de>
Cc: Marek Vasut <marex at denx.de>
Cc: NXP Linux Team <linux-imx at nxp.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Pengutronix Kernel Team <kernel at pengutronix.de>
Cc: Richard Cochran <richardcochran at gmail.com>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: devicetree at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
---
 arch/arm64/boot/dts/freescale/imx8mn.dtsi | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index 9869fe7652fca..aa38dd6dc9ba5 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -1175,10 +1175,8 @@ mipi_csi: mipi-csi at 32e30000 {
 				compatible = "fsl,imx8mm-mipi-csi2";
 				reg = <0x32e30000 0x1000>;
 				interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
-				assigned-clocks = <&clk IMX8MN_CLK_CAMERA_PIXEL>,
-						  <&clk IMX8MN_CLK_CSI1_PHY_REF>;
-				assigned-clock-parents = <&clk IMX8MN_SYS_PLL2_1000M>,
-							  <&clk IMX8MN_SYS_PLL2_1000M>;
+				assigned-clocks = <&clk IMX8MN_CLK_CAMERA_PIXEL>;
+				assigned-clock-parents = <&clk IMX8MN_SYS_PLL2_1000M>;
 				assigned-clock-rates = <333000000>;
 				clock-frequency = <333000000>;
 				clocks = <&clk IMX8MN_CLK_DISP_APB_ROOT>,
-- 
2.40.1




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