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Message-ID: <fd22f818-f123-482a-97ff-6f113bc08164@ti.com>
Date: Fri, 12 Apr 2024 10:33:48 +0530
From: "Kumar, Udit" <u-kumar1@...com>
To: Neha Malcom Francis <n-francis@...com>, <robh@...nel.org>,
<conor+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
<vigneshr@...com>, <nm@...com>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <kristo@...nel.org>
Subject: Re: [PATCH v2 5/5] arm64: dts: ti: k3-j7200-mcu: Add the MCU domain
watchdog instances
Hi Neha
On 4/12/2024 9:55 AM, Neha Malcom Francis wrote:
> There are 2 watchdog instances in the MCU domain. These instances are
> coupled with the MCU domain R55 instances. Reserve them as they are not
> used by A72.
>
> Signed-off-by: Neha Malcom Francis <n-francis@...com>
> ---
> Changes since v1:
> - patch added
>
> .../boot/dts/ti/k3-j7200-mcu-wakeup.dtsi | 26 +++++++++++++++++++
> 1 file changed, 26 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
> index 7cf21c99956e..d1a42c3f30c0 100644
> --- a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
> @@ -686,4 +686,30 @@ mcu_mcan1: can@...68000 {
> bosch,mram-cfg = <0x0 128 64 64 64 64 32 32>;
> status = "disabled";
> };
> +
> + /*
> + * The 2 RTI instances are couple with MCU R5Fs so keeping them
> + * reserved as these will be used by their respective firmware
> + */
> + mcu_watchdog0: watchdog@...00000 {
> + compatible = "ti,j7-rti-wdt";
> + reg = <0x00 0x40600000 0x00 0xbd>;
please refer Table 2-3. MCU Domain Memory Map of TRM.
Size of wdt is 0x100 , with this change in size from 0xbd to 0x100.
you can use
Reviewed-by: Udit Kumar <u-kumar1@...com> for whole series
> + clocks = <&k3_clks 262 1>;
> + power-domains = <&k3_pds 262 TI_SCI_PD_EXCLUSIVE>;
> + assigned-clocks = <&k3_clks 262 1>;
> + assigned-clock-parents = <&k3_clks 262 5>;
> + /* reserved for MCU_R5F0_0 */
> + status = "reserved";
> + };
> +
> + mcu_watchdog1: watchdog@...10000 {
> + compatible = "ti,j7-rti-wdt";
> + reg = <0x00 0x40610000 0x00 0xbd>;
> + clocks = <&k3_clks 263 1>;
> + power-domains = <&k3_pds 263 TI_SCI_PD_EXCLUSIVE>;
> + assigned-clocks = <&k3_clks 263 1>;
> + assigned-clock-parents = <&k3_clks 263 5>;
> + /* reserved for MCU_R5F0_1 */
> + status = "reserved";
> + };
> };
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