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From 09381afbd95859e22aad7d0647b202eba7bb2cae Mon Sep 17 00:00:00 2001
From: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Date: Thu, 5 Dec 2019 17:30:15 +0300
Subject: [PATCH] MTD: renesas-rpc: fix dummy cycles
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
---
drivers/mtd/spi-nor/renesas-rpc-qspi.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/renesas-rpc-qspi.c b/drivers/mtd/spi-nor/renesas-rpc-qspi.c
index 3d2d5dbe03e0..f4abdac10670 100644
--- a/drivers/mtd/spi-nor/renesas-rpc-qspi.c
+++ b/drivers/mtd/spi-nor/renesas-rpc-qspi.c
@@ -458,7 +458,11 @@ static ssize_t rpc_read_flash(struct spi_nor *nor, loff_t from, size_t len,
/* ...setup read sequence */
val = rpc_readl(rpc, RPC_DRENR);
- val |= RPC_DRENR_DME | RPC_DRENR_CDE;
+ if (nor->read_dummy)
+ val |= RPC_DRENR_DME;
+ else
+ val &= ~RPC_DRENR_DME;
+ val |= RPC_DRENR_CDE;
rpc_writel(rpc, RPC_DRENR, val);
rpc_do_read_flash(rpc, from, len, buf, nor->addr_width > 3);
--
2.17.1
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