| Message ID | 20250309070603.35254-4-ziyao@disroot.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Support I2C controllers in RK3528 | expand |
Hi, > +&i2c1 { > + pinctrl-names = "default"; > + pinctrl-0 = <&i2c1m0_xfer>; > + status = "okay"; > + > + eeprom@50 { > + compatible = "belling,bl24c16a", "atmel,24c16"; > + reg = <0x50>; > + pagesize = <16>; > + vcc-supply = <&vcc_3v3>; > + }; > +}; This eeprom stores the device information written by the manufacturer, such as mac address and sn. So it should be marked as read-only. Thanks, Chukun
On Mon, Mar 10, 2025 at 03:00:23PM +0800, Chukun Pan wrote: > Hi, > > > +&i2c1 { > > + pinctrl-names = "default"; > > + pinctrl-0 = <&i2c1m0_xfer>; > > + status = "okay"; > > + > > + eeprom@50 { > > + compatible = "belling,bl24c16a", "atmel,24c16"; > > + reg = <0x50>; > > + pagesize = <16>; > > + vcc-supply = <&vcc_3v3>; > > + }; > > +}; > > This eeprom stores the device information written by the manufacturer, > such as mac address and sn. So it should be marked as read-only. Thanks, this makes sense. > Thanks, > Chukun > > -- > 2.25.1 > Best regards, Yao Zi
diff --git a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts index b74e605a5a82..ddcf690eb513 100644 --- a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts +++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts @@ -122,6 +122,19 @@ vccio_sd: regulator-vccio-sd { }; }; +&i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1m0_xfer>; + status = "okay"; + + eeprom@50 { + compatible = "belling,bl24c16a", "atmel,24c16"; + reg = <0x50>; + pagesize = <16>; + vcc-supply = <&vcc_3v3>; + }; +}; + &pinctrl { gpio-keys { user_key: user-key {
Radxa E20C ships an onboard I2C EEPROM for storing production information. Enable it in devicetree. Signed-off-by: Yao Zi <ziyao@disroot.org> --- arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts | 13 +++++++++++++ 1 file changed, 13 insertions(+)