From: Chunyan Zhang <zhang.lyra@gmail.com>
To: Mark Brown <broonie@kernel.org>
Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
Orson Zhai <orsonzhai@gmail.com>,
Baolin Wang <baolin.wang7@gmail.com>,
Chunyan Zhang <chunyan.zhang@unisoc.com>,
Chunyan Zhang <zhang.lyra@gmail.com>
Subject: [PATCH] spi: sprd: switch the sequence of setting WDG_LOAD_LOW and _HIGH
Date: Tue, 2 Jun 2020 16:24:15 +0800 [thread overview]
Message-ID: <20200602082415.5848-1-zhang.lyra@gmail.com> (raw)
From: Lingling Xu <ling_ling.xu@unisoc.com>
The watchdog counter consists of WDG_LOAD_LOW and WDG_LOAD_HIGH,
which would be loaded to watchdog counter once writing WDG_LOAD_LOW.
Fixes: ac1775012058 ("spi: sprd: Add the support of restarting the system")
Signed-off-by: Lingling Xu <ling_ling.xu@unisoc.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
---
drivers/spi/spi-sprd-adi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi-sprd-adi.c b/drivers/spi/spi-sprd-adi.c
index 87dadb6b8ebf..8e84e25a8f7a 100644
--- a/drivers/spi/spi-sprd-adi.c
+++ b/drivers/spi/spi-sprd-adi.c
@@ -389,9 +389,9 @@ static int sprd_adi_restart_handler(struct notifier_block *this,
sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_CTRL, val);
/* Load the watchdog timeout value, 50ms is always enough. */
+ sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOAD_HIGH, 0);
sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOAD_LOW,
WDG_LOAD_VAL & WDG_LOAD_MASK);
- sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOAD_HIGH, 0);
/* Start the watchdog to reset system */
sprd_adi_read(sadi, sadi->slave_pbase + REG_WDG_CTRL, &val);
--
2.20.1
next reply other threads:[~2020-06-02 8:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-02 8:24 Chunyan Zhang [this message]
2020-06-02 11:09 ` [PATCH] spi: sprd: switch the sequence of setting WDG_LOAD_LOW and _HIGH Mark Brown
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