[PATCH 5.11 515/775] remoteproc/mediatek: acknowledge watchdog IRQ after handled
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-03-02 05:31:19
Also in:
lkml
Subsystem:
remote processor (remoteproc) subsystem, the rest · Maintainers:
Bjorn Andersson, Mathieu Poirier, Linus Torvalds
From: Tzung-Bi Shih <redacted>
[ Upstream commit 8c545f52dce44368fff524e13116e696e005c074 ]
Acknowledges watchdog IRQ after handled or kernel keeps receiving the
interrupt.
Fixes: fd0b6c1ff85a ("remoteproc/mediatek: Add support for mt8192 SCP")
Signed-off-by: Tzung-Bi Shih <redacted>
Link: https://lore.kernel.org/r/20210127082046.3735157-1-tzungbi@google.com (local)
Signed-off-by: Bjorn Andersson <redacted>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/remoteproc/mtk_common.h | 1 +
drivers/remoteproc/mtk_scp.c | 20 +++++++++++---------
2 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h
index 988edb4977c31..bcab38511bf31 100644
--- a/drivers/remoteproc/mtk_common.h
+++ b/drivers/remoteproc/mtk_common.h@@ -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
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index e0c2356903616..eba825b46696e 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c@@ -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)
--
2.27.0