netdev - [PATCH 09/12] can: rcar_canfd: Fix R-Car Gen4 CFCC.CFTML field width

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Message-Id: <9c37aaa799a2391be272dbaa474379cf9a7af147.1674499048.git.geert+renesas@glider.be>
Date:   Mon, 23 Jan 2023 19:56:11 +0100
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Fabrizio Castro <fabrizio.castro.jz@...esas.com>
Cc:     Philipp Zabel <p.zabel@...gutronix.de>,
        Ulrich Hecht <uli+renesas@...nd.eu>, linux-can@...r.kernel.org,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 09/12] can: rcar_canfd: Fix R-Car Gen4 CFCC.CFTML field width

On R-Car Gen4 CAN_FD variants, the Common FIFO TX Message Buffer Link
(CFTML) field in the Common FIFO Configuration / Control Register (CCFC)
register is one bit wider than on older variants.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
 drivers/net/can/rcar/rcar_canfd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index ee7bbd9d1151201b..376a5d606acc66c2 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -233,7 +233,8 @@
 /* Common FIFO bits */
 
 /* RSCFDnCFDCFCCk */
-#define RCANFD_CFCC_CFTML(gpriv, x)	(((x) & 0xf) << reg_gen4(gpriv, 16, 20))
+#define RCANFD_CFCC_CFTML(gpriv, x)	\
+	(((x) & reg_gen4(gpriv, 0x1f, 0xf)) << reg_gen4(gpriv, 16, 20))
 #define RCANFD_CFCC_CFM(gpriv, x)	(((x) & 0x3) << reg_gen4(gpriv,  8, 16))
 #define RCANFD_CFCC_CFIM		BIT(12)
 #define RCANFD_CFCC_CFDC(gpriv, x)	(((x) & 0x7) << reg_gen4(gpriv, 21,  8))
-- 
2.34.1