diff options
| author | Adam Ford <aford173@gmail.com> | 2022-02-05 11:31:01 -0600 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2022-02-12 13:58:43 +0800 |
| commit | f471b9a5267941b8121e3cdee29fb207f79f38ec (patch) | |
| tree | 3f69f46fc1b46a4140a2f01398085b20f696824e /arch/arm64/boot/dts/freescale | |
| parent | 6a57f224f7346c8d23596f2ef1ce360669926f54 (diff) | |
arm64: dts: imx8mm-beacon: Enable PCIe
The baseboard supports a PCIe slot with a 100MHz reference clock,
but it's controlled by a different GPIO, so a gated clock is
required.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm64/boot/dts/freescale')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi index 0da311898e01..ec3f2c177035 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi @@ -3,6 +3,8 @@ * Copyright 2020 Compass Electronics Group, LLC */ +#include <dt-bindings/phy/phy-imx8-pcie.h> + / { leds { compatible = "gpio-leds"; @@ -34,6 +36,19 @@ }; }; + pcie0_refclk: pcie0-refclk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <100000000>; + }; + + pcie0_refclk_gated: pcie0-refclk-gated { + compatible = "gpio-gate-clock"; + clocks = <&pcie0_refclk>; + #clock-cells = <0>; + enable-gpios = <&pca6416_1 2 GPIO_ACTIVE_LOW>; + }; + reg_audio: regulator-audio { compatible = "regulator-fixed"; regulator-name = "3v3_aud"; @@ -64,6 +79,16 @@ startup-delay-us = <100000>; }; + reg_pcie0: regulator-pcie { + compatible = "regulator-fixed"; + regulator-name = "pci_pwr_en"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + enable-active-high; + gpio = <&pca6416_1 1 GPIO_ACTIVE_HIGH>; + startup-delay-us = <100000>; + }; + reg_usdhc2_vmmc: regulator-usdhc2 { compatible = "regulator-fixed"; regulator-name = "VSD_3V3"; @@ -202,6 +227,32 @@ }; }; +&pcie_phy { + fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>; + fsl,tx-deemph-gen1 = <0x2d>; + fsl,tx-deemph-gen2 = <0xf>; + fsl,clkreq-unsupported; + clocks = <&pcie0_refclk_gated>; + clock-names = "ref"; + status = "okay"; +}; + +&pcie0 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pcie0>; + reset-gpio = <&gpio4 21 GPIO_ACTIVE_LOW>; + clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>, + <&pcie0_refclk_gated>; + clock-names = "pcie", "pcie_aux", "pcie_bus"; + assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>, + <&clk IMX8MM_CLK_PCIE1_CTRL>; + assigned-clock-rates = <10000000>, <250000000>; + assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>, + <&clk IMX8MM_SYS_PLL2_250M>; + vpcie-supply = <®_pcie0>; + status = "okay"; +}; + &sai3 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sai3>; @@ -308,6 +359,12 @@ >; }; + pinctrl_pcie0: pcie0grp { + fsl,pins = < + MX8MM_IOMUXC_SAI2_RXFS_GPIO4_IO21 0x41 + >; + }; + pinctrl_sai3: sai3grp { fsl,pins = < MX8MM_IOMUXC_SAI3_TXFS_SAI3_TX_SYNC 0xd6 |