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riscv: dts: sophgo: enable hardware clock (RTC) on the Milk-V Pioneer 

These boards have a working hardware clock if you put a CR-1220
battery in them. We enable it using information from a 6.1.x vendor
kernel.

Reviewed-by: Chen Wang <unicorn_wang@outlook.com>
Signed-off-by: Michael Orlitzky <michael@orlitzky.com>
Link: https://lore.kernel.org/r/20260107112922.20013-2-michael@orlitzky.com
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Signed-off-by: Chen Wang <wangchen20@iscas.ac.cn>
master
Michael Orlitzky 2026-01-07 06:29:22 -05:00 committed by Inochi Amaoto
parent 03ea867691
commit 9e81c52268
1 changed files with 21 additions and 0 deletions
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21
arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
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@ -52,6 +52,17 @@
status = "okay";
};
&i2c0 {
pinctrl-0 = <&i2c0_cfg>;
pinctrl-names = "default";
status = "okay";
rtc: rtc@68 {
compatible = "dallas,ds1307";
reg = <0x68>;
};
};
&i2c1 {
pinctrl-0 = <&i2c1_cfg>;
pinctrl-names = "default";
@ -89,6 +100,16 @@
};
};
i2c0_cfg: i2c0-cfg {
i2c0-pins {
pinmux = <PINMUX(PIN_IIC0_SDA, 0)>,
<PINMUX(PIN_IIC0_SCL, 0)>;
bias-pull-up;
drive-strength-microamp = <26800>;
input-schmitt-enable;
};
};
i2c1_cfg: i2c1-cfg {
i2c1-pins {
pinmux = <PINMUX(PIN_IIC1_SDA, 0)>,