The PCIe reference clock required by the PCIe Endpoints connected to the PCIe connector corresponding to the PCIe1 instance of PCIe on J784S4-EVM is driven by the ACSPCIE module. Add the device-tree support for enabling the same. Signed-off-by: Siddharth Vadapalli <s-vadapalli@xxxxxx> --- Hello, This patch is based on linux-next tagged next-20240930. The dependencies mentioned in the v1 patch have been merged and this patch doesn't have dependencies anymore. v1: https://lore.kernel.org/r/20240715123301.1184833-1-s-vadapalli@xxxxxx/ Changes since v1: - Rebased patch on next-20240930. Logs validating this patch with an NVMe SSD connected to the PCIe connector corresponding to the PCIe1 instance of PCIe on J784S4 EVM: https://gist.github.com/Siddharth-Vadapalli-at-TI/19a878518b657df434396b4bed78f945 Regards, Siddharth. arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi index e73bb750b09a..bef115575cab 100644 --- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi @@ -7,6 +7,7 @@ #include <dt-bindings/mux/mux.h> #include <dt-bindings/phy/phy.h> +#include <dt-bindings/phy/phy-cadence.h> #include <dt-bindings/phy/phy-ti.h> #include "k3-serdes.h" @@ -81,6 +82,11 @@ pcie3_ctrl: pcie3-ctrl@407c { reg = <0x407c 0x4>; }; + acspcie0_proxy_ctrl: acspcie0-ctrl@1a090 { + compatible = "ti,j784s4-acspcie-proxy-ctrl", "syscon"; + reg = <0x1a090 0x4>; + }; + serdes_ln_ctrl: mux-controller@4080 { compatible = "reg-mux"; reg = <0x00004080 0x30>; @@ -1094,11 +1100,12 @@ pcie1_rc: pcie@2910000 { interrupts = <GIC_SPI 330 IRQ_TYPE_EDGE_RISING>; device_type = "pci"; ti,syscon-pcie-ctrl = <&pcie1_ctrl 0x0>; + ti,syscon-acspcie-proxy-ctrl = <&acspcie0_proxy_ctrl 0x1>; max-link-speed = <3>; num-lanes = <4>; power-domains = <&k3_pds 333 TI_SCI_PD_EXCLUSIVE>; - clocks = <&k3_clks 333 0>; - clock-names = "fck"; + clocks = <&k3_clks 333 0>, <&serdes0 CDNS_TORRENT_REFCLK_DRIVER>; + clock-names = "fck", "pcie_refclk"; #address-cells = <3>; #size-cells = <2>; bus-range = <0x0 0xff>; -- 2.40.1
