linux-kernel - [PATCH v3 2/2] arm64: dts: ti: k3-j784s4-j742s2-evm-common: enable ACSPCIE0 output for PCIe1

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Message-ID: <20250422123218.3788223-3-s-vadapalli@ti.com>
Date: Tue, 22 Apr 2025 18:02:18 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <u-kumar1@...com>,
        <parth105105@...il.com>, <parth.pancholi@...adex.com>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: [PATCH v3 2/2] arm64: dts: ti: k3-j784s4-j742s2-evm-common: enable ACSPCIE0 output for PCIe1

The PCIe reference clock required by the PCIe Endpoints connected to the
PCIe connector corresponding to the PCIe1 instance of PCIe on J784S4-EVM
and J742S2-EVM is driven by the ACSPCIE0 module. Add the device-tree
support for enabling the same.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---

The previous versions of this series were a single patch. Based on the
feedback received on previous versions, the SoC and Board support has
been split in order to allow reuse for other Boards based on the same
SoC.

v2 patch:
https://lore.kernel.org/r/20250411121307.793646-1-s-vadapalli@ti.com/
Changes since v2 patch:
- The SoC and board changes have been split across:
  k3-j784s4-j742s2-main-common.dtsi and k3-j784s4-j742s2-evm-common.dtsi
  respectively.

Regards,
Siddharth.

 arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi
index 2664f74a9c7a..fa656b7b13a1 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi
@@ -5,6 +5,9 @@
  * EVM Board Schematics(j784s4): https://www.ti.com/lit/zip/sprr458
  * EVM Board Schematics(j742s2): https://www.ti.com/lit/zip/SPAC001
  */
+
+#include <dt-bindings/phy/phy-cadence.h>
+
 / {
 	chosen {
 		stdout-path = "serial2:115200n8";
@@ -1407,10 +1410,13 @@ &main_mcan4 {
 
 &pcie1_rc {
 	status = "okay";
+	clocks = <&k3_clks 333 0>, <&serdes0 CDNS_TORRENT_REFCLK_DRIVER>;
+	clock-names = "fck", "pcie_refclk";
 	num-lanes = <2>;
 	reset-gpios = <&exp1 2 GPIO_ACTIVE_HIGH>;
 	phys = <&serdes0_pcie1_link>;
 	phy-names = "pcie-phy";
+	ti,syscon-acspcie-proxy-ctrl = <&acspcie0_proxy_ctrl 0x1>;
 };
 
 &serdes1 {
-- 
2.34.1