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| author |   Richard Zhu <hongxing.zhu@nxp.com> | 2021-04-14 10:26:14 +0800 |
|---|---|---|
| committer |   Shawn Guo <shawnguo@kernel.org> | 2021-06-12 16:17:02 +0800 |
| commit | 9b95c44b417662327e1a2602cc6c6af8cba95825 (patch) | |
| tree | 143ca4ffb36705273d518a15dda577494c21e8ec | |
| parent | arm64: dts: imx8mm: Add spba1 and spba2 buses (diff) | |
| download | linux-dev-9b95c44b417662327e1a2602cc6c6af8cba95825.tar.xz linux-dev-9b95c44b417662327e1a2602cc6c6af8cba95825.zip | |
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 <hongxing.zhu@nxp.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 1 |
1 files changed, 1 insertions, 0 deletions
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>, <&pcie0_refclk>; clock-names = "pcie", "pcie_aux", "pcie_phy", "pcie_bus"; + vph-supply = <&vgen5_reg>; status = "okay"; }; |