From: André Valentin <avalentin@marcant.net>
Date: Tue, 17 Jan 2023 22:07:42 +0000 (+0100)
Subject: ipq807x: add nvmem uboot-env support
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=952c738c0fe360ae074fbf6a87d03883157bc2dd;p=openwrt%2Fstaging%2Fblocktrron.git

ipq807x: add nvmem uboot-env support

Enabling kernel symbol CONFIG_NVMEM_U_BOOT_ENV allows to use u-boot
environement variable ethaddr with nvmen. That way it is possible to assign
the MAC address to the ethernet device driver.

Example of usage in dts:
....
	partition@600000 {
			compatible = "u-boot,env";
			label = "0:appsblenv";
			reg = <0x600000 0x10000>;

			macaddr_lan: ethaddr {
			};
	};
....
&dp5 {
	status = "okay";
	phy-handle = <&qca8081>;
	label = "wan";
	nvmem-cells = <&macaddr_lan>;
	nvmem-cell-names = "mac-address-ascii";
	mac-address-increment = <1>;
};

This is needed for Zyxel NBG7815.

Signed-off-by: André Valentin <avalentin@marcant.net>
---

diff --git a/target/linux/ipq807x/config-5.15 b/target/linux/ipq807x/config-5.15
index f979f9a28a..4a5aee7d9e 100644
--- a/target/linux/ipq807x/config-5.15
+++ b/target/linux/ipq807x/config-5.15
@@ -257,6 +257,7 @@ CONFIG_NVIDIA_CARMEL_CNP_ERRATUM=y
 CONFIG_NVMEM=y
 CONFIG_NVMEM_QCOM_QFPROM=y
 # CONFIG_NVMEM_SPMI_SDAM is not set
+CONFIG_NVMEM_U_BOOT_ENV=y
 CONFIG_NVMEM_SYSFS=y
 CONFIG_OF=y
 CONFIG_OF_ADDRESS=y