On 2017-08-03 21:18, Boris Brezillon wrote:

On Wed, 19 Jul 2017 17:17:50 +0530
Abhishek Sahu [off-list ref] wrote:

quoted

The current driver is failing without complete bootchain since
NAND_DEV_CMD_VLD value is not valid.

Signed-off-by: Abhishek Sahu <redacted>

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.

quoted

---
 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);

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html