Commit 9b95c44b authored by Richard Zhu's avatar Richard Zhu Committed by Shawn Guo
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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: default avatarRichard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: default avatarLucas Stach <l.stach@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 7923353b

arch/arm64/boot/dts/freescale/imx8mq-evk.dts

+1 −0
Original line number Diff line number Diff line
@@ -318,6 +318,7 @@ &pcie0 { 
		 <&clk IMX8MQ_CLK_PCIE1_PHY>,

		 <&pcie0_refclk>;

	clock-names = "pcie", "pcie_aux", "pcie_phy", "pcie_bus";

	vph-supply = <&vgen5_reg>;

	status = "okay";

};