linux-kernel - [PATCH v3 16/19] ARM: dts: microchip: sama7g5: Add OTPC clocks

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Message-ID: <20260120154502.1280938-10-ada@thorsis.com>
Date: Tue, 20 Jan 2026 16:44:50 +0100
From: Alexander Dahl <ada@...rsis.com>
To: Claudiu Beznea <claudiu.beznea@...on.dev>
Cc: Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Ryan Wanner <ryan.wanner@...rochip.com>,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Subject: [PATCH v3 16/19] ARM: dts: microchip: sama7g5: Add OTPC clocks

These clocks should be enabled, datasheet says:

> The OTPC is clocked through the Power Management Controller (PMC).
> The user must power on the main RC oscillator and enable the
> peripheral clock of the OTPC prior to reading or writing the OTP
> memory.

Earlier discussions suggest, MCK0 must be enabled, too.  MCK0 is parent
of peripheral otpc_clk, so this is done implicitly.

Link: https://lore.kernel.org/linux-clk/ec34efc2-2051-4b8a-b5d8-6e2fd5e08c28@microchip.com/T/#u
Signed-off-by: Alexander Dahl <ada@...rsis.com>
---

Notes:
    v3:
    - Removed clock-names, not part of bindings anymore, and not used by driver
    
    v2:
    - new patch, not present in v1

 arch/arm/boot/dts/microchip/sama7g5.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/microchip/sama7g5.dtsi b/arch/arm/boot/dts/microchip/sama7g5.dtsi
index b8296391fc696..30193f3bf9775 100644
--- a/arch/arm/boot/dts/microchip/sama7g5.dtsi
+++ b/arch/arm/boot/dts/microchip/sama7g5.dtsi
@@ -1036,6 +1036,7 @@ otpc: efuse@...00000 {
 			reg = <0xe8c00000 0x100>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+			clocks = <&pmc PMC_TYPE_CORE SAMA7G5_PMC_MAIN_RC>, <&pmc PMC_TYPE_PERIPHERAL 67>;
 
 			temperature_calib: calib@1 {
 				reg = <OTP_PKT(1) 76>;
-- 
2.47.3