2024-02-01 16:14:41

by André Draszik

Subject: [PATCH v3 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 <[email protected]>
Reviewed-by: Peter Griffin <[email protected]>
Reviewed-by: Tudor Ambarus <[email protected]>

---
v3: collect Reviewed-by: tags

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";
--
2.43.0.594.gd9cf4e227d-goog

2024-02-08 08:09:32

by Krzysztof Kozlowski

Subject: Re: (subset) [PATCH v3 7/7] arm64: dts: exynos: gs101: enable i2c bus 12 on gs101-oriole

On Thu, 01 Feb 2024 16:11:43 +0000, André Draszik wrote:
> 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.
>
> [...]

Applied, thanks!

[7/7] arm64: dts: exynos: gs101: enable i2c bus 12 on gs101-oriole
https://git.kernel.org/krzk/linux/c/f9555ac036e253ca99a4d6d55e7e9402b77df77d

Best regards,
--
Krzysztof Kozlowski <[email protected]>