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Subject[PATCH 14/14] qcom: mtd: nand: programmed NAND_DEV_CMD_VLD register
Date
The current driver is failing without complete bootchain in
BAM mode since NAND_DEV_CMD_VLD value is not valid. So
programmed the required value in NAND_DEV_CMD_VLD register.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
---
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 641e85d..260167b 100644
--- a/drivers/mtd/nand/qcom_nandc.c
+++ b/drivers/mtd/nand/qcom_nandc.c
@@ -121,6 +121,9 @@

/* NAND_CTRL bits */
#define BAM_MODE_EN BIT(0)
+
+/* 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
@@ -2676,6 +2679,7 @@ 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 or BAM DMA */
if (!nandc->dma_bam_enabled) {
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
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