[PATCH 1/5] mtd: spi: renesas: Write DREAR register once

[Marek Vasut]

Instead of writing DREAR with 0 first and then overwriting DREAR again
in case of 4 byte addressing mode, write DREAR in every case once with
the correct content right away. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org>
---
Cc: "Cédric Le Goater" <clg at kaod.org>
Cc: Hai Pham <hai.pham.ud at renesas.com>
Cc: Jagan Teki <jagan at amarulasolutions.com>
Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
Cc: Paul Barker <paul.barker.ct at bp.renesas.com>
Cc: Tom Rini <trini at konsulko.com>
Cc: William Zhang <william.zhang at broadcom.com>
Cc: u-boot at lists.denx.de
---
 drivers/spi/renesas_rpc_spi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/renesas_rpc_spi.c b/drivers/spi/renesas_rpc_spi.c
index e6b602cf7b4..749c686a6c4 100644
--- a/drivers/spi/renesas_rpc_spi.c
+++ b/drivers/spi/renesas_rpc_spi.c
@@ -277,14 +277,15 @@ static int rpc_spi_mem_exec_op(struct spi_slave *spi,
 		writel(RPC_DRCMR_CMD(op->cmd.opcode), priv->regs + RPC_DRCMR);
 		smenr |= RPC_DRENR_CDE;
 
-		writel(0, priv->regs + RPC_DREAR);
 		if (op->addr.nbytes == 4) {
 			writel(RPC_DREAR_EAV(offset >> 25) | RPC_DREAR_EAC(1),
 			       priv->regs + RPC_DREAR);
 			smenr |= RPC_DRENR_ADE(0xF);
 		} else if (op->addr.nbytes == 3) {
+			writel(0, priv->regs + RPC_DREAR);
 			smenr |= RPC_DRENR_ADE(0x7);
 		} else {
+			writel(0, priv->regs + RPC_DREAR);
 			smenr |= RPC_DRENR_ADE(0);
 		}
 
-- 
2.45.2