[Letux-kernel] [PATCH v8 6/7] MIPS: DTS: JZ4780: define node for JZ4780 efuse

H. Nikolaus Schaller hns at goldelico.com
Fri Feb 28 17:00:52 CET 2020


From: PrasannaKumar Muralidharan <prasannatsmkumar at gmail.com>

This patch brings support for the JZ4780 efuse. Currently it only exposes
a read only access to the entire 8K bits efuse memory and the
ethernet mac address for the davicom dm9000 chip on the CI20 board.

It also changes the nemc ranges definition to give the driver
access to the efuse registers, which are in the middle of the
nemc reg range.

Tested-by: Mathieu Malaterre <malat at debian.org>
Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar at gmail.com>
Signed-off-by: Mathieu Malaterre <malat at debian.org>
Signed-off-by: H. Nikolaus Schaller <hns at goldelico.com>
---
 arch/mips/boot/dts/ingenic/jz4780.dtsi | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi b/arch/mips/boot/dts/ingenic/jz4780.dtsi
index f928329b034b..79f90a5b0415 100644
--- a/arch/mips/boot/dts/ingenic/jz4780.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi
@@ -357,11 +357,12 @@
 	};
 
 	nemc: nemc at 13410000 {
-		compatible = "ingenic,jz4780-nemc";
+		compatible = "ingenic,jz4780-nemc", "simple-mfd";
 		reg = <0x13410000 0x10000>;
 		#address-cells = <2>;
 		#size-cells = <1>;
-		ranges = <1 0 0x1b000000 0x1000000
+		ranges = <0 0 0x13410000 0x10000
+			  1 0 0x1b000000 0x1000000
 			  2 0 0x1a000000 0x1000000
 			  3 0 0x19000000 0x1000000
 			  4 0 0x18000000 0x1000000
@@ -371,6 +372,20 @@
 		clocks = <&cgu JZ4780_CLK_NEMC>;
 
 		status = "disabled";
+
+		efuse: efuse at d0 {
+			reg = <0 0xd0 0x30>;
+			compatible = "ingenic,jz4780-efuse";
+
+			clocks = <&cgu JZ4780_CLK_AHB2>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			eth0_addr: eth-mac-addr at 0x22 {
+				reg = <0x22 0x6>;
+			};
+		};
 	};
 
 	dma: dma at 13420000 {
-- 
2.23.0



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