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| author | Tinghan Shen <tinghan.shen@mediatek.com> | 2023-09-01 16:09:32 +0800 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2023-09-13 11:46:16 -0600 |
| commit | 5d5cfce48069df97ae83d001187f69d63b87242f (patch) | |
| tree | 3bd3f96a7a871ff2ec0ef11b3eb4de2aa505499b /drivers/remoteproc | |
| parent | c01fb97cf2b55b155ee99c1ad51672f80042a922 (diff) | |
| download | lwn-5d5cfce48069df97ae83d001187f69d63b87242f.tar.gz lwn-5d5cfce48069df97ae83d001187f69d63b87242f.zip | |
remoteproc: mediatek: Handle MT8195 SCP core 1 watchdog timeout
The MT8195 SCP core 1 watchdog timeout needs to be handled in the
SCP core 0 IRQ handler because the MT8195 SCP core 1 watchdog timeout
IRQ is wired on the same IRQ entry for core 0 watchdog timeout.
MT8195 SCP has a watchdog status register to identify the watchdog
timeout source when IRQ triggered.
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230901080935.14571-12-tinghan.shen@mediatek.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
| -rw-r--r-- | drivers/remoteproc/mtk_common.h | 5 | ||||
| -rw-r--r-- | drivers/remoteproc/mtk_scp.c | 25 |
2 files changed, 29 insertions, 1 deletions
diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index 3d6b53b9f374..6d7736a031f7 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -55,6 +55,10 @@ #define MT8192_CORE0_WDT_IRQ 0x10030 #define MT8192_CORE0_WDT_CFG 0x10034 +#define MT8195_SYS_STATUS 0x4004 +#define MT8195_CORE0_WDT BIT(16) +#define MT8195_CORE1_WDT BIT(17) + #define MT8195_L1TCM_SRAM_PDN_RESERVED_RSI_BITS GENMASK(7, 4) #define MT8195_CPU1_SRAM_PD 0x1084 @@ -63,6 +67,7 @@ #define MT8195_CORE1_SW_RSTN_CLR 0x20000 #define MT8195_CORE1_SW_RSTN_SET 0x20004 #define MT8195_CORE1_MEM_ATT_PREDEF 0x20008 +#define MT8195_CORE1_WDT_IRQ 0x20030 #define MT8195_CORE1_WDT_CFG 0x20034 #define MT8195_SEC_CTRL 0x85000 diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index 2c86695c22c2..147f56d60096 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -222,6 +222,29 @@ static void mt8192_scp_irq_handler(struct mtk_scp *scp) } } +static void mt8195_scp_irq_handler(struct mtk_scp *scp) +{ + u32 scp_to_host; + + scp_to_host = readl(scp->cluster->reg_base + MT8192_SCP2APMCU_IPC_SET); + + if (scp_to_host & MT8192_SCP_IPC_INT_BIT) { + scp_ipi_handler(scp); + } else { + u32 reason = readl(scp->cluster->reg_base + MT8195_SYS_STATUS); + + if (reason & MT8195_CORE0_WDT) + writel(1, scp->cluster->reg_base + MT8192_CORE0_WDT_IRQ); + + if (reason & MT8195_CORE1_WDT) + writel(1, scp->cluster->reg_base + MT8195_CORE1_WDT_IRQ); + + scp_wdt_handler(scp, reason); + } + + writel(scp_to_host, scp->cluster->reg_base + MT8192_SCP2APMCU_IPC_CLR); +} + static void mt8195_scp_c1_irq_handler(struct mtk_scp *scp) { u32 scp_to_host; @@ -1256,7 +1279,7 @@ static const struct mtk_scp_of_data mt8192_of_data = { static const struct mtk_scp_of_data mt8195_of_data = { .scp_clk_get = mt8195_scp_clk_get, .scp_before_load = mt8195_scp_before_load, - .scp_irq_handler = mt8192_scp_irq_handler, + .scp_irq_handler = mt8195_scp_irq_handler, .scp_reset_assert = mt8192_scp_reset_assert, .scp_reset_deassert = mt8192_scp_reset_deassert, .scp_stop = mt8195_scp_stop, |