Good day,
On Wed, May 21, 2025 at 10:24:03PM +0800, Wentao Liang wrote:
> In mt8195_scp_c1_irq_handler(), only the IPC interrupt bit
> (MT8192_SCP_IPC_INT_BIT) was checked., but does not handle
> when this bit is not set. This could lead to unhandled watchdog
> events. This could lead to unhandled watchdog events. A proper
> implementation can be found in mt8183_scp_irq_handler().
>
As pointed out by Markus, this changelog needs work.
> Add a new branch to handle SCP watchdog events when the IPC
> interrupt bit is not set.
>
> Fixes: 6a1c9aaf04eb ("remoteproc: mediatek: Add MT8195 SCP core 1 operations")
> Cc: sta...@vger.kernel.org # v6.7
> Signed-off-by: Wentao Liang <vu...@iscas.ac.cn>
> ---
> drivers/remoteproc/mtk_scp.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> index 0f4a7065d0bd..316e8c98a503 100644
> --- a/drivers/remoteproc/mtk_scp.c
> +++ b/drivers/remoteproc/mtk_scp.c
> @@ -273,6 +273,8 @@ static void mt8195_scp_c1_irq_handler(struct mtk_scp *scp)
>
> if (scp_to_host & MT8192_SCP_IPC_INT_BIT)
> scp_ipi_handler(scp);
> + else
> + scp_wdt_handler(scp, scp_to_host);
I would much rather see a test for the watchdog bit than just assuming it is
a watchdog interrupt. And while at it, please refactor the bit definition to be
platform agnostic rather than reusing 8192 definitions on an 8195 platform.
Thanks,
Mathieu
>
> writel(scp_to_host, scp->cluster->reg_base +
> MT8195_SSHUB2APMCU_IPC_CLR);
> }
> --
> 2.42.0.windows.2
>
