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remoteproc/mediatek: acknowledge watchdog IRQ after handled 

Acknowledges watchdog IRQ after handled or kernel keeps receiving the
interrupt.

Fixes: fd0b6c1ff8 ("remoteproc/mediatek: Add support for mt8192 SCP")
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20210127082046.3735157-1-tzungbi@google.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Tzung-Bi Shih 2021-01-27 16:20:46 +08:00 committed by Bjorn Andersson
parent 9a1d271485
commit 8c545f52dc
2 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/remoteproc/mtk_common.h
View File

@ -47,6 +47,7 @@
#define MT8192_CORE0_SW_RSTN_CLR 0x10000
#define MT8192_CORE0_SW_RSTN_SET 0x10004
#define MT8192_CORE0_WDT_IRQ 0x10030
#define MT8192_CORE0_WDT_CFG 0x10034
#define SCP_FW_VER_LEN 32

20
drivers/remoteproc/mtk_scp.c
View File

@ -197,17 +197,19 @@ static void mt8192_scp_irq_handler(struct mtk_scp *scp)
scp_to_host = readl(scp->reg_base + MT8192_SCP2APMCU_IPC_SET);
if (scp_to_host & MT8192_SCP_IPC_INT_BIT)
if (scp_to_host & MT8192_SCP_IPC_INT_BIT) {
scp_ipi_handler(scp);
else
scp_wdt_handler(scp, scp_to_host);
/*
* SCP won't send another interrupt until we clear
* MT8192_SCP2APMCU_IPC.
*/
writel(MT8192_SCP_IPC_INT_BIT,
scp->reg_base + MT8192_SCP2APMCU_IPC_CLR);
/*
* SCP won't send another interrupt until we clear
* MT8192_SCP2APMCU_IPC.
*/
writel(MT8192_SCP_IPC_INT_BIT,
scp->reg_base + MT8192_SCP2APMCU_IPC_CLR);
} else {
scp_wdt_handler(scp, scp_to_host);
writel(1, scp->reg_base + MT8192_CORE0_WDT_IRQ);
}
}
static irqreturn_t scp_irq_handler(int irq, void *priv)