On 2017-08-03 21:18, Boris Brezillon wrote:
On Wed, 19 Jul 2017 17:17:50 +0530
Abhishek Sahu <absahu@xxxxxxxxxxxxxx> wrote:
The current driver is failing without complete bootchain since
NAND_DEV_CMD_VLD value is not valid.
Signed-off-by: Abhishek Sahu <absahu@xxxxxxxxxxxxxx>
BTW, do you want to backport this fix? Maybe you add Fixes and
Cc-stable tags...
It was not a critical fix but its better to backport this.
I will add these tags in v3.
---
drivers/mtd/nand/qcom_nandc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mtd/nand/qcom_nandc.c
b/drivers/mtd/nand/qcom_nandc.c
index bc0408c..f3b995d 100644
--- a/drivers/mtd/nand/qcom_nandc.c
+++ b/drivers/mtd/nand/qcom_nandc.c
@@ -148,6 +148,9 @@
#define FETCH_ID 0xb
#define RESET_DEVICE 0xd
+/* Value for NAND_DEV_CMD_VLD */
+#define NAND_DEV_CMD_VLD_VAL 0x1d
+
/*
* the NAND controller performs reads/writes with ECC in 516 byte
chunks.
* the driver calls the chunks 'step' or 'codeword' interchangeably
@@ -1972,6 +1975,7 @@ static int qcom_nandc_setup(struct
qcom_nand_controller *nandc)
{
/* kill onenand */
nandc_write(nandc, SFLASHC_BURST_CFG, 0);
+ nandc_write(nandc, NAND_DEV_CMD_VLD, NAND_DEV_CMD_VLD_VAL);
/* enable ADM DMA */
nandc_write(nandc, NAND_FLASH_CHIP_SELECT, DM_EN);
--
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