linux-kernel - [PATCH v2 13/16] ARM: dts: microchip: sam9x60: Add OTPC node

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Message-Id: <20250211065304.5019-1-ada@thorsis.com>
Date: Tue, 11 Feb 2025 07:53:01 +0100
From: Alexander Dahl <ada@...rsis.com>
To: Claudiu Beznea <claudiu.beznea@...on.dev>
Cc: Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Ryan Wanner <ryan.wanner@...rochip.com>,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Subject: [PATCH v2 13/16] ARM: dts: microchip: sam9x60: Add OTPC node

The One-Time Programmable (OTP) Memory Controller (OTPC) is the secure
interface between the system and the OTP memory.  It also features the
Unique Product ID (UID) registers containing a unique serial number.

See datasheet (DS60001579G) sections "7. Memories" and "23. OTP Memory
Controller (OTPC)" for reference.

Signed-off-by: Alexander Dahl <ada@...rsis.com>
---

Notes:
    v2:
    - squashed with patch adding the clock properties

 arch/arm/boot/dts/microchip/sam9x60.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/sam9x60.dtsi b/arch/arm/boot/dts/microchip/sam9x60.dtsi
index 1724b79967a17..af859f0b83a0f 100644
--- a/arch/arm/boot/dts/microchip/sam9x60.dtsi
+++ b/arch/arm/boot/dts/microchip/sam9x60.dtsi
@@ -15,6 +15,7 @@
 #include <dt-bindings/clock/microchip,sam9x60-pmc.h>
 #include <dt-bindings/mfd/at91-usart.h>
 #include <dt-bindings/mfd/atmel-flexcom.h>
+#include <dt-bindings/nvmem/microchip,sama7g5-otpc.h>
 
 / {
 	#address-cells = <1>;
@@ -157,6 +158,15 @@ sdmmc1: sdio-host@...00000 {
 			status = "disabled";
 		};
 
+		otpc: efuse@...00000 {
+			compatible = "microchip,sam9x60-otpc", "syscon";
+			reg = <0xeff00000 0xec>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			clocks = <&pmc PMC_TYPE_CORE SAM9X60_PMC_MAIN_RC>, <&pmc PMC_TYPE_PERIPHERAL 46>;
+			clock-names = "main_rc_osc", "otpc_clk";
+		};
+
 		apb {
 			compatible = "simple-bus";
 			#address-cells = <1>;
-- 
2.39.5