linux-kernel - [PATCH v2 7/7] arm64: dts: exynos: gs101: enable i2c bus 12 on gs101-oriole

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Date: Mon, 29 Jan 2024 17:40:10 +0000
From: André Draszik <andre.draszik@...aro.org>
To: peter.griffin@...aro.org,
	mturquette@...libre.com,
	sboyd@...nel.org,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org
Cc: linux-kernel@...r.kernel.org,
	kernel-team@...roid.com,
	tudor.ambarus@...aro.org,
	willmcvicker@...gle.com,
	semen.protsenko@...aro.org,
	inux-kernel@...r.kernel.org,
	alim.akhtar@...sung.com,
	s.nawrocki@...sung.com,
	tomasz.figa@...il.com,
	cw00.choi@...sung.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH v2 7/7] arm64: dts: exynos: gs101: enable i2c bus 12 on gs101-oriole

This bus has three USB-related devices attached to it:
    0x25: Maxim 77759 Type-C port controller
    0x35: Maxim 20339EWB Surge protection IC
    0x36: Maxim 77759 Fuel gauge
    0x57: NXP PCA9468 Battery charger
    0x66: Maxim 77759 PMIC
    0x69: Maxim 77759 Charger
where the Maxim 77759 has multiple i2c slave addresses.

These don't have (upstream) Linux drivers yet, but nevertheless we can
enable the bus so as to allow working on them (and to make i2cdetect /
i2cdump / etc. work).

Signed-off-by: André Draszik <andre.draszik@...aro.org>
Reviewed-by: Peter Griffin <peter.griffin@...aro.org>

---
v2:
* add short summary of devices attached to this bus & add TODO
* collect Reviewed-by: tags
---
 arch/arm64/boot/dts/exynos/google/gs101-oriole.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts b/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts
index cb4d17339b6b..6ccade2c8cb4 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts
+++ b/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts
@@ -72,6 +72,11 @@ eeprom: eeprom@50 {
 	};
 };
 
+&hsi2c_12 {
+	status = "okay";
+	/* TODO: add the devices once drivers exist */
+};
+
 &pinctrl_far_alive {
 	key_voldown: key-voldown-pins {
 		samsung,pins = "gpa7-3";
@@ -113,6 +118,11 @@ &usi8 {
 	status = "okay";
 };
 
+&usi12 {
+	samsung,mode = <USI_V2_I2C>;
+	status = "okay";
+};
+
 &watchdog_cl0 {
 	timeout-sec = <30>;
 	status = "okay";
-- 
2.43.0.429.g432eaa2c6b-goog