From db90a5e5fc2fbd843b29eb8110ed5e03604a2887 Mon Sep 17 00:00:00 2001 From: Jonathan Bell Date: Wed, 20 Sep 2023 13:04:54 +0100 Subject: [PATCH] arm: dt: add dtparams for PCIe reset timing override The Pi 5 variant gets two parameters so that the CM4-compatible name will also work on Pi 5. Signed-off-by: Jonathan Bell --- arch/arm/boot/dts/bcm2711-rpi-cm4.dts | 2 ++ arch/arm/boot/dts/bcm2712-rpi-5-b.dts | 2 ++ arch/arm/boot/dts/overlays/README | 7 +++++++ 3 files changed, 11 insertions(+) --- a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts +++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts @@ -446,5 +446,7 @@ i2c_csi_dsi0: &i2c0 { cam1_reg = <&cam1_reg>,"status"; cam1_reg_gpio = <&cam1_reg>,"gpio:4", <&cam1_reg>,"gpio:0=", <&gpio>; + + pcie_tperst_clk_ms = <&pcie0>,"brcm,tperst-clk-ms:0"; }; }; --- a/arch/arm/boot/dts/bcm2712-rpi-5-b.dts +++ b/arch/arm/boot/dts/bcm2712-rpi-5-b.dts @@ -814,6 +814,8 @@ spi10_cs_pins: &spi10_cs_gpio1 {}; pciex1 = <&pciex1>, "status"; pciex1_gen = <&pciex1> , "max-link-speed:0"; pciex1_no_l0s = <&pciex1>, "aspm-no-l0s?"; + pciex1_tperst_clk_ms = <&pciex1>, "brcm,tperst-clk-ms:0"; + pcie_tperst_clk_ms = <&pciex1>, "brcm,tperst-clk-ms:0"; random = <&random>, "status"; rtc_bbat_vchg = <&rpi_rtc>, "trickle-charge-microvolt:0"; spi = <&spi0>, "status"; --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -280,6 +280,10 @@ Params: (2711 only, but not applicable on CM4S) N.B. USB-A ports on 4B are subsequently disabled + pcie_tperst_clk_ms Add N milliseconds between PCIe reference clock + activation and PERST# deassertion + (CM4 and 2712, default "0") + pciex1 Set to "on" to enable the external PCIe link (2712 only, default "off") @@ -290,6 +294,9 @@ Params: PCIe link for devices that have broken implementations (2712 only, default "off") + pciex1_tperst_clk_ms Alias for pcie_tperst_clk_ms + (2712 only, default "0") + spi Set to "on" to enable the spi interfaces (default "off")