linux-kernel - [PATCH] nvmem: qfprom: Increase fuse blow timeout to prevent write fail.

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Message-Id: <20220107103056.1.Ifc6ce6bb655ddb8ebbb0f340fcaaa58369bb009c@changeid>
Date:   Fri,  7 Jan 2022 10:31:11 +0800
From:   Knox Chiou <knoxchiou@...omium.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Evan Green <evgreen@...omium.org>,
        Knox Chiou <knoxchiou@...omium.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH] nvmem: qfprom: Increase fuse blow timeout to prevent write fail.

sc7180 blow fuses got slightly chances to hit qfprom_reg_write timeout.
Current timeout is simply too low. Since blowing fuses is a
very rare operation, so the risk associated with overestimating this
number is low.
Increase fuse blow timeout from 1ms to 10ms.

Signed-off-by: Knox Chiou <knoxchiou@...omium.org>
---

 drivers/nvmem/qfprom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c
index c500d6235bf6b..1840d400fb53c 100644
--- a/drivers/nvmem/qfprom.c
+++ b/drivers/nvmem/qfprom.c
@@ -22,7 +22,7 @@
 
 /* Amount of time required to hold charge to blow fuse in micro-seconds */
 #define QFPROM_FUSE_BLOW_POLL_US	100
-#define QFPROM_FUSE_BLOW_TIMEOUT_US	1000
+#define QFPROM_FUSE_BLOW_TIMEOUT_US	10000
 
 #define QFPROM_BLOW_STATUS_OFFSET	0x048
 #define QFPROM_BLOW_STATUS_BUSY		0x1
-- 
2.34.1.448.ga2b2bfdf31-goog