linux-kernel - Re: [PATCH 1/7] arm64: dts: ti: k3-j721s2-main: Add interrupts property

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Message-ID: <d15078ef-9a3a-47f6-a1c8-b9eed911e945@ti.com>
Date: Fri, 25 Jul 2025 16:16:18 +0530
From: "Kumar, Udit" <u-kumar1@...com>
To: Yemike Abhilash Chandra <y-abhilashchandra@...com>, <nm@...com>,
        <vigneshr@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <vaishnav.a@...com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <imx@...ts.linux.dev>, <linux-kernel@...r.kernel.org>,
        <u-kumar1@...com>
Subject: Re: [PATCH 1/7] arm64: dts: ti: k3-j721s2-main: Add interrupts
 property


On 7/22/2025 11:20 AM, Yemike Abhilash Chandra wrote:
> Hi Udit,
>
> Thanks for the review.
>
> On 21/07/25 19:40, Kumar, Udit wrote:
>>
>> On 7/21/2025 7:37 PM, Kumar, Udit wrote:
>>>
>>> On 7/14/2025 2:57 PM, Yemike Abhilash Chandra wrote:
>>>> Add interrupts property for CDNS CSI2RX. Interrupt IDs are taken 
>>>> from the
>>>> J721S2 TRM [0].
>>>>
>>>> Interrupt Line      | Source Interrupt
>>>> --------------------|----------------------------
>>>> GIC500SS_SPI_IN_153 | CSI_RX_IF1_CSI_ERR_IRQ_0
>>>> GIC500SS_SPI_IN_152 | CSI_RX_IF1_CSI_IRQ_0
>>>> GIC500SS_SPI_IN_157 | CSI_RX_IF2_CSI_ERR_IRQ_0
>>>> GIC500SS_SPI_IN_156 | CSI_RX_IF2_CSI_IRQ_0
>>>>
>>>> [0]: https://www.ti.com/lit/zip/spruj28
>>>>
>>>> Signed-off-by: Yemike Abhilash Chandra <y-abhilashchandra@...com>
>>>> ---
>>>>   arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 6 ++++++
>>>>   1 file changed, 6 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi 
>>>> b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
>>>> index 62f45377a2c9..6f32a2b0c40c 100644
>>>> --- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
>>>> +++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
>>>> @@ -1248,6 +1248,9 @@ ti_csi2rx0: ticsi2rx@...0000 {
>>>>           cdns_csi2rx0: csi-bridge@...4000 {
>>>>               compatible = "ti,j721e-csi2rx", "cdns,csi2rx";
>>>>               reg = <0x00 0x04504000 0x00 0x1000>;
>>>> +            interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>,
>>>> +                     <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
>>>
>>> Just cosmetic thing, if you are doing v2 then consider 152 first , 
>>> followed by 153.
>>>
>>> Otherwise
>>>
>>> Reviewed-by: Udit Kumar <u-kumar1@...com>
>>
>>
>> Sorry, sent too fast, offset of 32 missing .
>>
>
> From what I’ve seen, the SPI interrupt IDs on J721S2 start from 0,
> so I don’t think we need to subtract the 32 offset.
>
>
> Interrupt Input Line   Interrupt ID    Source Interrupt
> -------------------------------------------------------------
> GIC500SS_SPI_IN_00     0               ESM0_ESM_INT_CFG_LVL_0
>
> To confirm this, I’ve latched onto the correct interrupt line, and
> my IRQ handler is getting triggered as expected. I’m also seeing the
> desired output [0].
>
> Let me know if I might be missing anything.
>

Thanks for update and please retain Reviewed-by


> [0]: 
> https://gist.github.com/Yemike-Abhilash-Chandra/f46587ec1ef72671ee31803dd93434b4
>
> Thanks and Regards
> Yemike Abhilash Chandra
>
>>
>>>
>>>> +            interrupt-names = "error_irq", "irq";
>>>>               clocks = <&k3_clks 38 3>, <&k3_clks 38 1>, <&k3_clks 
>>>> 38 3>,
>>>>                   <&k3_clks 38 3>, <&k3_clks 38 4>, <&k3_clks 38 4>;
>>>>               clock-names = "sys_clk", "p_clk", "pixel_if0_clk",
>>>> @@ -1301,6 +1304,9 @@ ti_csi2rx1: ticsi2rx@...0000 {
>>>>           cdns_csi2rx1: csi-bridge@...4000 {
>>>>               compatible = "ti,j721e-csi2rx", "cdns,csi2rx";
>>>>               reg = <0x00 0x04514000 0x00 0x1000>;
>>>> +            interrupts = <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,
>>>> +                     <GIC_SPI 156 IRQ_TYPE_LEVEL_HIGH>;
>>>> +            interrupt-names = "error_irq", "irq";
>>>>               clocks = <&k3_clks 39 3>, <&k3_clks 39 1>, <&k3_clks 
>>>> 39 3>,
>>>>                   <&k3_clks 39 3>, <&k3_clks 39 4>, <&k3_clks 39 4>;
>>>>               clock-names = "sys_clk", "p_clk", "pixel_if0_clk",