linux-kernel - [PATCH-next v3 3/3] arm64: dts: rockchip: Add missing pinctrl for PCIe20x1 node

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240712164554.1763-3-linux.amoon@gmail.com>
Date: Fri, 12 Jul 2024 22:15:51 +0530
From: Anand Moon <linux.amoon@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>
Cc: Anand Moon <linux.amoon@...il.com>,
	Jonas Karlman <jonas@...boo.se>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH-next v3 3/3] arm64: dts: rockchip: Add missing pinctrl for PCIe20x1 node

Add missing pinctrl settings for PCIe 2.0 x1 clock request and wake
signals. Each component of PCIe communication have the following control
signals: PERST, WAKE, CLKREQ, and REFCLK. These signals work to generate
high-speed signals and communicate with other PCIe devices.
Used by root complex to endpoint depending on the power state.

PERST is referred to as a fundamental reset. PERST should be held low
until all the power rails in the system and the reference clock are stable.
A transition from low to high in this signal usually indicates the
beginning of link initialization.

WAKE signal is an active-low signal that is used to return the PCIe
interface to an active state when in a low-power state.

CLKREQ signal is also an active-low signal and is used to request the
reference clock.

Rename node from 'pcie2' to 'pcie20x1' to align with schematic
nomenclature.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
 arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
index c5ac233264fc..a1e83546f1be 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
@@ -326,7 +326,7 @@ &pcie2x1l0 {

 &pcie2x1l2 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&pcie2_2_rst>;
+	pinctrl-0 = <&pcie20x12_pins>;
 	reset-gpios = <&gpio3 RK_PB0 GPIO_ACTIVE_HIGH>;
 	vpcie3v3-supply = <&vcc3v3_pcie2x1l2>;
 	status = "okay";
@@ -363,9 +363,15 @@ hp_detect: hp-detect {
 		};
 	};

-	pcie2 {
-		pcie2_2_rst: pcie2-2-rst {
-			rockchip,pins = <3 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;
+	pcie20x1 {
+		pcie20x12_pins: pcie20x12-pins {
+			rockchip,pins =
+				/* PCIE20_1_2_CLKREQn_M1_L */
+				<3 RK_PC7 4 &pcfg_pull_up>,
+				/* PCIE_PERST_L */
+				<3 RK_PB0 RK_FUNC_GPIO &pcfg_pull_up>,
+				/* PCIE20_1_2_WAKEn_M1_L */
+				<3 RK_PD0 4 &pcfg_pull_up>;
 		};
 	};

-- 
2.44.0