linux-kernel - [PATCH v2 5/5] riscv: dts: starfive: jh7110-common: bootph-pre-ram hinting needed by boot loader

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Message-ID: <20250203013730.269558-6-e@freeshell.de>
Date: Sun,  2 Feb 2025 17:37:11 -0800
From: E Shattow <e@...eshell.de>
To: Emil Renner Berthing <kernel@...il.dk>,
	Conor Dooley <conor@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>
Cc: linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	E Shattow <e@...eshell.de>
Subject: [PATCH v2 5/5] riscv: dts: starfive: jh7110-common: bootph-pre-ram hinting needed by boot  loader

Add bootph-pre-ram hinting to jh7110-common.dtsi:
  - i2c5_pins and i2c-pins subnode for connection to eeprom
  - eeprom node
  - qspi flash configuration subnode
  - memory node
  - uart0 for serial console

  With this the U-Boot SPL secondary program loader may drop such
  overrides when using dt-rebasing with JH7110 OF_UPSTREAM board targets.

Signed-off-by: E Shattow <e@...eshell.de>
---
 arch/riscv/boot/dts/starfive/jh7110-common.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
index 30c5f3487c8b..c9e7ae59ee7c 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
@@ -28,6 +28,7 @@ chosen {
 	memory@...00000 {
 		device_type = "memory";
 		reg = <0x0 0x40000000 0x1 0x0>;
+		bootph-pre-ram;
 	};
 
 	gpio-restart {
@@ -247,6 +248,7 @@ emmc_vdd: aldo4 {
 	};
 
 	eeprom@50 {
+		bootph-pre-ram;
 		compatible = "atmel,24c04";
 		reg = <0x50>;
 		pagesize = <16>;
@@ -323,6 +325,7 @@ &qspi {
 	nor_flash: flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
+		bootph-pre-ram;
 		cdns,read-delay = <2>;
 		spi-max-frequency = <100000000>;
 		cdns,tshsl-ns = <1>;
@@ -405,6 +408,7 @@ GPOEN_SYS_I2C2_DATA,
 	};
 
 	i2c5_pins: i2c5-0 {
+		bootph-pre-ram;
 		i2c-pins {
 			pinmux = <GPIOMUX(19, GPOUT_LOW,
 					      GPOEN_SYS_I2C5_CLK,
@@ -413,6 +417,7 @@ GPI_SYS_I2C5_CLK)>,
 					      GPOEN_SYS_I2C5_DATA,
 					      GPI_SYS_I2C5_DATA)>;
 			bias-disable; /* external pull-up */
+			bootph-pre-ram;
 			input-enable;
 			input-schmitt-enable;
 		};
@@ -641,6 +646,7 @@ GPOEN_DISABLE,
 };
 
 &uart0 {
+	bootph-pre-ram;
 	clock-frequency = <24000000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pins>;
-- 
2.47.2