linux-kernel - [PATCH V2 1/2] mtd: rawnand: qcom: remove write to unavailable register

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Message-Id: <1591701056-3944-2-git-send-email-sivaprak@codeaurora.org>
Date:   Tue,  9 Jun 2020 16:40:55 +0530
From:   Sivaprakash Murugesan <sivaprak@...eaurora.org>
To:     miquel.raynal@...tlin.com, richard@....at, vigneshr@...com,
        peter.ujfalusi@...com, sivaprak@...eaurora.org,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH V2 1/2] mtd: rawnand: qcom: remove write to unavailable register

SFLASHC_BURST_CFG register is not available on all ipq nand platforms,
it is available only on ipq8064 devices and the nand controller works
without configuring these registers in this platform, so register write
to this can be removed.

Signed-off-by: Sivaprakash Murugesan <sivaprak@...eaurora.org>
---
 drivers/mtd/nand/raw/qcom_nandc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c
index 5b11c70..e0afa2c 100644
--- a/drivers/mtd/nand/raw/qcom_nandc.c
+++ b/drivers/mtd/nand/raw/qcom_nandc.c
@@ -36,7 +36,6 @@
 #define	NAND_DEV_CMD1			0xa4
 #define	NAND_DEV_CMD2			0xa8
 #define	NAND_DEV_CMD_VLD		0xac
-#define	SFLASHC_BURST_CFG		0xe0
 #define	NAND_ERASED_CW_DETECT_CFG	0xe8
 #define	NAND_ERASED_CW_DETECT_STATUS	0xec
 #define	NAND_EBI2_ECC_BUF_CFG		0xf0
@@ -2774,7 +2773,6 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc)
 	u32 nand_ctrl;
 
 	/* kill onenand */
-	nandc_write(nandc, SFLASHC_BURST_CFG, 0);
 	nandc_write(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD_VLD),
 		    NAND_DEV_CMD_VLD_VAL);
 
-- 
2.7.4