Linux-RISC-V Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: Michael Opdenacker <michael.opdenacker@rootcommit.com>
To: Yixun Lan <dlan@gentoo.org>
Cc: Dan Carpenter <dan.carpenter@linaro.org>,
	 Binbin Zhou <zhoubinbin@loongson.cn>,
	linux-riscv@lists.infradead.org,  spacemit@lists.linux.dev,
	 Michael Opdenacker <michael.opdenacker@rootcommit.com>
Subject: [PATCH 1/2] riscv: dts: spacemit: Add i2c buses on OrangePi RV2
Date: Mon, 15 Dec 2025 10:10:14 +0000 (UTC)	[thread overview]
Message-ID: <20251215-k1-boards-add-mmc-v1-1-d68dc87d4aab@rootcommit.com> (raw)
In-Reply-To: <20251215-k1-boards-add-mmc-v1-0-d68dc87d4aab@rootcommit.com>

The OrangePi RV2 board exposes i2c2 and i2c8 buses
from the Spacemit K1 SoC.

This declares devices present on such buses, in particular
the at24 eeprom to store MAC addresses and the regulators
attached to the PMIC on i2c8.

Signed-off-by: Michael Opdenacker <michael.opdenacker@rootcommit.com>
---
 arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 166 +++++++++++++++++++++++
 1 file changed, 166 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
index 41dc8e35e6eb..b9b760d7c398 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
@@ -17,6 +17,8 @@ aliases {
 		serial0 = &uart0;
 		ethernet0 = &eth0;
 		ethernet1 = &eth1;
+		i2c2 = &i2c2;
+		i2c8 = &i2c8;
 	};
 
 	chosen {
@@ -33,6 +35,25 @@ led1 {
 			default-state = "on";
 		};
 	};
+
+	reg_dc_in: dc-in-12v {
+		compatible = "regulator-fixed";
+		regulator-name = "dc_in_12v";
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	reg_vcc_4v: vcc-4v {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_4v";
+		regulator-min-microvolt = <4000000>;
+		regulator-max-microvolt = <4000000>;
+		regulator-boot-on;
+		regulator-always-on;
+		vin-supply = <&reg_dc_in>;
+	};
 };
 
 &eth0 {
@@ -81,6 +102,151 @@ rgmii1: phy@1 {
 	};
 };
 
+&i2c2 {
+	pinctrl-0 = <&i2c2_0_cfg>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	eeprom@50 {
+		compatible = "atmel,24c02";
+		reg = <0x50>;
+		vcc-supply = <&buck3_1v8>; /* EEPROM_VCC1V8 */
+		pagesize = <16>;
+		read-only;
+		size = <256>;
+
+		nvmem-layout {
+			compatible = "onie,tlv-layout";
+
+			mac-address {
+				#nvmem-cell-cells = <1>;
+			};
+
+			num-macs {
+			};
+
+			serial-number {
+			};
+		};
+	};
+};
+
+&i2c8 {
+	pinctrl-0 = <&i2c8_cfg>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	pmic@41 {
+		compatible = "spacemit,p1";
+		reg = <0x41>;
+		interrupts = <64>;
+		vin-supply = <&reg_vcc_4v>;
+
+		regulators {
+			buck1 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			buck2 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			buck3_1v8: buck3 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			buck4 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			buck5 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			buck6 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			aldo1 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-boot-on;
+			};
+
+			aldo2 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			aldo3 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			aldo4 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo1 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-boot-on;
+			};
+
+			dldo2 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo3 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo4 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-always-on;
+			};
+
+			dldo5 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo6 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-always-on;
+			};
+
+			dldo7 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+		};
+	};
+};
+
 &pdma {
 	status = "okay";
 };

-- 
2.43.0


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  parent reply	other threads:[~2025-12-15 10:10 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-15 10:10 [PATCH 0/2] Attempt to enable MMC on SpacemiT K1 boards Michael Opdenacker
2025-12-15 10:10 ` [PATCH 2/2] riscv: dts: spacemit: Add MMC support on BPI-F3 and OrangePi RV2 Michael Opdenacker
2025-12-15 12:46   ` Yao Zi
2025-12-15 13:58     ` Michael Opdenacker
2025-12-24 15:00   ` Chukun Pan
2025-12-29 10:14     ` Javier Martinez Canillas
2025-12-15 10:10 ` Michael Opdenacker [this message]
2025-12-15 12:58   ` [PATCH 1/2] riscv: dts: spacemit: Add i2c buses on " Yao Zi
2025-12-15 15:00     ` Michael Opdenacker
2025-12-16  5:37       ` Yao Zi
2025-12-16 21:05         ` Michael Opdenacker
2025-12-17 15:26           ` Iker Pedrosa
2025-12-17 16:27             ` Michael Opdenacker
2025-12-17 22:10               ` Johannes Erdfelt
2025-12-18  5:19                 ` Michael Opdenacker
2025-12-18  5:25                   ` Michael Opdenacker
2025-12-18  9:49                     ` Iker Pedrosa
2025-12-19 11:29                       ` Yixun Lan
2025-12-20  2:22                         ` Yao Zi
2025-12-17 20:25             ` Javier Martinez Canillas
2025-12-16  8:58   ` Javier Martinez Canillas
2025-12-24 14:00   ` Chukun Pan

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20251215-k1-boards-add-mmc-v1-1-d68dc87d4aab@rootcommit.com \
    --to=michael.opdenacker@rootcommit.com \
    --cc=dan.carpenter@linaro.org \
    --cc=dlan@gentoo.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=spacemit@lists.linux.dev \
    --cc=zhoubinbin@loongson.cn \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox