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[v2,2/3] arm64: dts: imx8mq-evk: add one regulator used to power up pcie phy

Message ID 1616564059-8713-3-git-send-email-hongxing.zhu@nxp.com
State New
Headers show
Series add one regulator used to power up pcie phy | expand

Commit Message

Richard Zhu March 24, 2021, 5:34 a.m. UTC
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 <hongxing.zhu@nxp.com>
 arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 1 +
 1 file changed, 1 insertion(+)
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diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index 85b045253a0e..4d2035e3dd7c 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>,
 	clock-names = "pcie", "pcie_aux", "pcie_phy", "pcie_bus";
+	vph-supply = <&vgen5_reg>;
 	status = "okay";