linux-kernel - [PATCH v3 4/4] riscv: dts: starfive: jh7110-common: bootph-pre-ram hinting needed by boot loader

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Message-ID: <20250502103101.957016-5-e@freeshell.de>
Date: Fri,  2 May 2025 03:30:44 -0700
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>,
	Alexandre Ghiti <alex@...ti.fr>
Cc: linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	E Shattow <e@...eshell.de>
Subject: [PATCH v3 4/4] 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
  - mmc0 for eMMC
  - mmc1 for SD Card
  - uart0 for serial console

  With this the U-Boot SPL secondary program loader may drop such overrides.

Signed-off-by: E Shattow <e@...eshell.de>
---
 arch/riscv/boot/dts/starfive/jh7110-common.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
index f1dc45b98e1d..d2cdb2f276c3 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 {
@@ -249,6 +250,7 @@ emmc_vdd: aldo4 {
 	eeprom@50 {
 		compatible = "atmel,24c04";
 		reg = <0x50>;
+		bootph-pre-ram;
 		pagesize = <16>;
 	};
 };
@@ -268,6 +270,7 @@ &mmc0 {
 	assigned-clocks = <&syscrg JH7110_SYSCLK_SDIO0_SDCARD>;
 	assigned-clock-rates = <50000000>;
 	bus-width = <8>;
+	bootph-pre-ram;
 	cap-mmc-highspeed;
 	mmc-ddr-1_8v;
 	mmc-hs200-1_8v;
@@ -285,6 +288,7 @@ &mmc1 {
 	assigned-clocks = <&syscrg JH7110_SYSCLK_SDIO1_SDCARD>;
 	assigned-clock-rates = <50000000>;
 	bus-width = <4>;
+	bootph-pre-ram;
 	no-sdio;
 	no-mmc;
 	cd-gpios = <&sysgpio 41 GPIO_ACTIVE_LOW>;
@@ -323,6 +327,7 @@ &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>;
@@ -402,6 +407,8 @@ GPOEN_SYS_I2C2_DATA,
 	};
 
 	i2c5_pins: i2c5-0 {
+		bootph-pre-ram;
+
 		i2c-pins {
 			pinmux = <GPIOMUX(19, GPOUT_LOW,
 					      GPOEN_SYS_I2C5_CLK,
@@ -410,6 +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;
 		};
@@ -638,6 +646,7 @@ GPOEN_DISABLE,
 };
 
 &uart0 {
+	bootph-pre-ram;
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pins>;
 	status = "okay";
-- 
2.49.0