commit d3f72878496cd4cccfe6c55defb4116f406effba
author Sean Anderson <sean.anderson@seco.com> Thu May 05 13:11:43 2022 -0400
committer Tom Rini <trini@konsulko.com> Wed Jun 08 14:00:22 2022 -0400
tree f637fb021430bf432f59edbee2b4dac6a318cb69
parent 472caa69e3480dc8e3fe1dd929b528a599341768

test: Load mac address using RTC

This uses the nvmem API to load a mac address from an RTC.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/sandbox/dts/test.dts

diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 4d0fd47..afcdda9 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -558,7 +558,8 @@
 	dsa_eth0: dsa-test-eth {
 		compatible = "sandbox,eth";
 		reg = <0x10006000 0x1000>;
-		mac-address = [ 02 00 11 22 33 48 ];
+		nvmem-cells = <&eth4_addr>;
+		nvmem-cell-names = "mac-address";
 	};
 
 	dsa-test {
@@ -722,9 +723,15 @@
 		};
 
 		rtc_0: rtc@43 {
+			#address-cells = <1>;
+			#size-cells = <1>;
 			reg = <0x43>;
 			compatible = "sandbox-rtc";
 			sandbox,emul = <&emul0>;
+
+			eth4_addr: mac-address@40 {
+				reg = <0x40 6>;
+			};
 		};
 
 		rtc_1: rtc@61 {

drivers/rtc/i2c_rtc_emul.c

diff --git a/drivers/rtc/i2c_rtc_emul.c b/drivers/rtc/i2c_rtc_emul.c
index ba418c2..c307d60 100644
--- a/drivers/rtc/i2c_rtc_emul.c
+++ b/drivers/rtc/i2c_rtc_emul.c
@@ -203,6 +203,15 @@
 	return 0;
 }
 
+static int sandbox_i2c_rtc_probe(struct udevice *dev)
+{
+	const u8 mac[] = { 0x02, 0x00, 0x11, 0x22, 0x33, 0x48 };
+	struct sandbox_i2c_rtc_plat_data *plat = dev_get_plat(dev);
+
+	memcpy(&plat->reg[0x40], mac, sizeof(mac));
+	return 0;
+}
+
 static const struct udevice_id sandbox_i2c_rtc_ids[] = {
 	{ .compatible = "sandbox,i2c-rtc-emul" },
 	{ }
@@ -213,6 +222,7 @@
 	.id		= UCLASS_I2C_EMUL,
 	.of_match	= sandbox_i2c_rtc_ids,
 	.bind		= sandbox_i2c_rtc_bind,
+	.probe		= sandbox_i2c_rtc_probe,
 	.priv_auto	= sizeof(struct sandbox_i2c_rtc),
 	.plat_auto	= sizeof(struct sandbox_i2c_rtc_plat_data),
 	.ops		= &sandbox_i2c_rtc_emul_ops,