[PATCH 4/4] arm64: dts: ti: k3-j7200-main: Add the MAIN domain watchdog instances
Kumar, Udit
u-kumar1 at ti.com
Tue Apr 9 23:05:39 PDT 2024
Hi Neha
On 3/26/2024 5:57 PM, Neha Malcom Francis wrote:
> There are 4 watchdog instances in the MAIN domain:
> * one each for the 2 A72 cores
> * one each for the 2 R5F cores
>
> Currently, the devicetree only describes watchdog instances for the A72
> cores and enables them. Describe the remaining but reserve them as they
> will be used by their respective firmware.
>
> Signed-off-by: Neha Malcom Francis <n-francis at ti.com>
> ---
> arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 27 +++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> index 657f9cc9f4ea..c448c2218e23 100644
> --- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> @@ -1254,6 +1254,33 @@ watchdog1: watchdog at 2210000 {
> assigned-clock-parents = <&k3_clks 253 5>;
> };
>
> + /*
> + * The following RTI instances are coupled with MCU R5Fs so
> + * keeping them reserved as these will be used by their respective
> + * firmware
> + */
> + watchdog2: watchdog at 23c0000 {
> + compatible = "ti,j7-rti-wdt";
> + reg = <0x00 0x23c0000 0x00 0x100>;
> + clocks = <&k3_clks 258 1>;
> + power-domains = <&k3_pds 258 TI_SCI_PD_EXCLUSIVE>;
> + assigned-clocks = <&k3_clks 258 1>;
> + assigned-clock-parents = <&k3_clks 258 5>;
> + /* reserved for MAIN_R5F0_0 */
> + status = "reserved";
> + };
> +
> + watchdog3: watchdog at 23d0000 {
> + compatible = "ti,j7-rti-wdt";
> + reg = <0x00 0x23d0000 0x00 0x100>;
> + clocks = <&k3_clks 259 1>;
> + power-domains = <&k3_pds 259 TI_SCI_PD_EXCLUSIVE>;
> + assigned-clocks = <&k3_clks 259 1>;
> + assigned-clock-parents = <&k3_clks 259 5>;
> + /* reserved for MAIN_R5F0_1 */
> + status = "reserved";
> + };
> +
Please see, if this make more sense to have label as watchdog28 and
watchdog29, to align with TRM.
Also request to add mcu domain 2 watchdog as well.
> main_timer0: timer at 2400000 {
> compatible = "ti,am654-timer";
> reg = <0x00 0x2400000 0x00 0x400>;
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