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

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Date:   Fri, 28 Feb 2020 17:00:52 +0100
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     PrasannaKumar Muralidharan <prasannatsmkumar@...il.com>,
        Andreas Kemnade <andreas@...nade.info>,
        Paul Cercueil <paul@...pouillou.net>,
        Mathieu Malaterre <malat@...ian.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paulburton@...nel.org>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        "H. Nikolaus Schaller" <hns@...delico.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-mips@...r.kernel.org, letux-kernel@...nphoenux.org,
        kernel@...a-handheld.com
Subject: [PATCH v8 6/7] MIPS: DTS: JZ4780: define node for JZ4780 efuse

From: PrasannaKumar Muralidharan <prasannatsmkumar@...il.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@...ian.org>
Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@...il.com>
Signed-off-by: Mathieu Malaterre <malat@...ian.org>
Signed-off-by: H. Nikolaus Schaller <hns@...delico.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@...10000 {
-		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@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@...2 {
+				reg = <0x22 0x6>;
+			};
+		};
 	};
 
 	dma: dma@...20000 {
-- 
2.23.0