linux-kernel - [PATCH RFT] memory: renesas-rpc-if: simplify register update

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Message-Id: <20211117102902.20062-1-wsa+renesas@sang-engineering.com>
Date:   Wed, 17 Nov 2021 11:29:02 +0100
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-renesas-soc@...r.kernel.org
Cc:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH RFT] memory: renesas-rpc-if: simplify register update

No need to open code regmap_update_bits().

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---

Only build tested as I don't have the G2L hardware.
@Prabhakar: would you also kindly test this patch?

 drivers/memory/renesas-rpc-if.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/memory/renesas-rpc-if.c b/drivers/memory/renesas-rpc-if.c
index a9f3e7bdddf8..0c8f00323a91 100644
--- a/drivers/memory/renesas-rpc-if.c
+++ b/drivers/memory/renesas-rpc-if.c
@@ -258,17 +258,14 @@ EXPORT_SYMBOL(rpcif_sw_init);
 
 static void rpcif_rzg2l_timing_adjust_sdr(struct rpcif *rpc)
 {
-	u32 data;
-
 	regmap_write(rpc->regmap, RPCIF_PHYWR, 0xa5390000);
 	regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000000);
 	regmap_write(rpc->regmap, RPCIF_PHYWR, 0x00008080);
 	regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000022);
 	regmap_write(rpc->regmap, RPCIF_PHYWR, 0x00008080);
 	regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000024);
-
-	regmap_read(rpc->regmap, RPCIF_PHYCNT, &data);
-	regmap_write(rpc->regmap, RPCIF_PHYCNT, data | RPCIF_PHYCNT_CKSEL(3));
+	regmap_update_bits(rpc->regmap, RPCIF_PHYCNT, RPCIF_PHYCNT_CKSEL(3),
+			   RPCIF_PHYCNT_CKSEL(3));
 	regmap_write(rpc->regmap, RPCIF_PHYWR, 0x00000030);
 	regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000032);
 }
-- 
2.30.2