From: Alexander Dahl <ada@thorsis.com>
To: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Ryan Wanner <ryan.wanner@microchip.com>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Subject: [PATCH v4 13/16] ARM: dts: microchip: sama7g5: Add OTPC clocks
Date: Thu, 5 Nov 2026 12:06:49 +0100 [thread overview]
Message-ID: <20261105110715.2486432-14-ada@thorsis.com> (raw)
In-Reply-To: <20261105110715.2486432-1-ada@thorsis.com>
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@thorsis.com>
---
Notes:
v4:
- no changes
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@e8c00000 {
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
next prev parent reply other threads:[~2026-11-05 13:11 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 11:06 [PATCH v4 00/16] Microchip OTPC driver on SAM9X60 exposing UIDxR as additional nvmem device Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 01/16] MAINTAINERS: Add sam9/sama to (AT91) SoC support Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 02/16] dt-bindings: clock: at91: Split up per SoC partially Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 03/16] dt-bindings: clock: at91: Allow referencing main rc oscillator in DT Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 04/16] clk: at91: Use new per SoC PMC clock index definitions Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 05/16] clk: at91: Allow enabling main_rc_osc through DT Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 06/16] clk: at91: Add peripheral clock id for OTPC Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 07/16] dt-bindings: nvmem: microchip-otpc: Add required clocks Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 08/16] nvmem: microchip-otpc: Avoid reading a write-only register Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 09/16] nvmem: microchip-otpc: Fix swapped 'sleep' and 'timeout' parameters Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 10/16] nvmem: microchip-otpc: Enable necessary clocks Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 11/16] nvmem: microchip-otpc: Expose UID registers as 2nd nvmem device Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 12/16] ARM: dts: microchip: Use new per SoC PMC bindings Alexander Dahl
2026-11-05 11:06 ` Alexander Dahl [this message]
2026-11-05 11:06 ` [PATCH v4 14/16] ARM: dts: microchip: sam9x60: Add OTPC node Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 15/16] ARM: dts: microchip: sam9x60_curiosity: Enable OTP Controller Alexander Dahl
2026-11-05 11:06 ` [PATCH v4 16/16] dt-bindings: clock: at91: Remove old PMC definitions Alexander Dahl
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