From: "Kumar, Udit" <u-kumar1@ti.com>
To: Judith Mendez <jm@ti.com>, Nishanth Menon <nm@ti.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<u-kumar1@ti.com>
Subject: Re: [PATCH] arm64: dts: ti: k3-am62p-j722s-common-wakeup: Add GP_SW1 efuse node for silicon revision
Date: Tue, 15 Sep 2026 22:10:24 +0530 [thread overview]
Message-ID: <b490c984-8fba-4b92-96f0-8e4a4cc811b0@ti.com> (raw)
In-Reply-To: <20260915001304.3781247-1-jm@ti.com>
Hi Judith,
On 9/15/2026 5:43 AM, Judith Mendez wrote:
> Add efuse node for GP_SW1 register at offset 0x230. The GP_SW1
> efuse register is used to determine AM62Px silicon revision.
> Reference efuse cell from chipid node via nvmem-cells.
>
> Signed-off-by: Judith Mendez <jm@ti.com>
> ---
> .../boot/dts/ti/k3-am62p-j722s-common-wakeup.dtsi | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-wakeup.dtsi
> index 8612b45e665cf..0f00e9d87f8ba 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-wakeup.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-wakeup.dtsi
> @@ -19,9 +19,23 @@ wkup_conf: bus@43000000 {
> chipid: chipid@14 {
> compatible = "ti,am654-chipid";
> reg = <0x14 0x4>;
> + nvmem-cells = <&gpsw1>;
> + nvmem-cell-names = "gpsw1";
> bootph-all;
> };
>
> + gpsw_efuse: efuse@230 {
> + compatible = "ti,am62p-efuse", "socionext,uniphier-efuse";
> + reg = <0x230 0x10>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + bootph-all;
> +
> + gpsw1: gpsw1@4 {
> + reg = <0x4 0x4>;
> + };
For J722S, this register this marked as reserved,
Could you update in am62-p specific dt.
Thanks
> + };
> +
> opp_efuse_table: syscon@18 {
> compatible = "ti,am62-opp-efuse-table", "syscon";
> reg = <0x18 0x4>;
next prev parent reply other threads:[~2026-09-15 16:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-15 0:13 Judith Mendez
2026-09-15 16:40 ` Kumar, Udit [this message]
2026-09-15 22:42 ` Judith Mendez
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