[PATCH] arm64: dts: imx8mp: Describe M24C32-D write-lockable page in DH i.MX8MP DHCOM DT

[Marek Vasut]

The i.MX8MP DHCOM SoM production rev.200 is populated with M24C32-D
EEPROMs which have Additional Write lockable page at separate I2C
address. Describe the page in DT to make it available.

Disable the additional page in rev.100 SoM DTO as those devices
contain EEPROM without an Additional Write lockable page.

Signed-off-by: Marek Vasut <ma...@denx.de>
---
Cc: "NXP i.MX U-Boot Team" <uboot-...@nxp.com>
Cc: Fabio Estevam <feste...@gmail.com>
Cc: Stefano Babic <sba...@denx.de>
Cc: u-b...@dh-electronics.com
---
 arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts |  8 ++++++++
 arch/arm/dts/imx8mp-dhcom-som.dtsi               | 12 ++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts 
b/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
index 5d9a00c9429..0e5d329b149 100644
--- a/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
+++ b/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
@@ -24,6 +24,14 @@
        pagesize = <16>;
 };
 
+&eeprom0wl {
+       status = "disabled";
+};
+
+&eeprom1wl {
+       status = "disabled";
+};
+
 &ethphy0f { /* SMSC LAN8740Ai */
        pinctrl-0 = <&pinctrl_ethphy0 &pinctrl_ioexp>;
        reset-gpios = <&gpio3 20 GPIO_ACTIVE_LOW>;
diff --git a/arch/arm/dts/imx8mp-dhcom-som.dtsi 
b/arch/arm/dts/imx8mp-dhcom-som.dtsi
index ea2a567447a..b504d36818b 100644
--- a/arch/arm/dts/imx8mp-dhcom-som.dtsi
+++ b/arch/arm/dts/imx8mp-dhcom-som.dtsi
@@ -392,6 +392,18 @@
                reg = <0x53>;
        };
 
+       eeprom0wl: eeprom@58 {
+               compatible = "atmel,24c32d-wl"; /* M24C32-D WL page of 0x50 */
+               pagesize = <32>;
+               reg = <0x58>;
+       };
+
+       eeprom1wl: eeprom@5b {
+               compatible = "atmel,24c32d-wl"; /* M24C32-D WL page of 0x53 */
+               pagesize = <32>;
+               reg = <0x5b>;
+       };
+
        ioexp: gpio@74 {
                compatible = "nxp,pca9539";
                reg = <0x74>;
-- 
2.42.0