From: Richard Zhu Date: Wed, 14 Apr 2021 02:26:14 +0000 (+0800) Subject: arm64: dts: imx8mq-evk: add one regulator used to power up pcie phy X-Git-Tag: accepted/tizen/unified/20230118.172025~6845^2~20^2~13 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9b95c44b417662327e1a2602cc6c6af8cba95825;p=platform%2Fkernel%2Flinux-rpi.git arm64: dts: imx8mq-evk: add one regulator used to power up pcie phy Both 1.8v and 3.3v power supplies can be used by i.MX8MQ PCIe PHY. In default, the PCIE_VPH voltage is suggested to be 1.8v refer to data sheet. When PCIE_VPH is supplied by 3.3v in the HW schematic design, the VREG_BYPASS bits of GPR registers should be cleared from default value 1b'1 to 1b'0. Thus, the internal 3v3 to 1v8 translator would be turned on. Signed-off-by: Richard Zhu Reviewed-by: Lucas Stach Signed-off-by: Shawn Guo --- diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts index 85b0452..4d2035e 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts @@ -318,6 +318,7 @@ <&clk IMX8MQ_CLK_PCIE1_PHY>, <&pcie0_refclk>; clock-names = "pcie", "pcie_aux", "pcie_phy", "pcie_bus"; + vph-supply = <&vgen5_reg>; status = "okay"; };