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From:   Maxime Chevallier <maxime.chevallier@bootlin.com>
To:     Mark Brown <broonie@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        rafael@kernel.org, Colin Foster <colin.foster@in-advantage.com>,
        Vladimir Oltean <vladimir.oltean@nxp.com>,
        Lee Jones <lee@kernel.org>, davem@davemloft.net,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>, Andrew Lunn <andrew@lunn.ch>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>
Cc:     Maxime Chevallier <maxime.chevallier@bootlin.com>,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        thomas.petazzoni@bootlin.com
Subject: [RFC 4/7] mfd: ocelot-spi: Change the regmap stride to reflect the real one
Date:   Fri, 24 Mar 2023 10:36:41 +0100
Message-Id: <20230324093644.464704-5-maxime.chevallier@bootlin.com>
In-Reply-To: <20230324093644.464704-1-maxime.chevallier@bootlin.com>
References: <20230324093644.464704-1-maxime.chevallier@bootlin.com>
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When used over SPI, the register addresses needs to be translated,
compared to when used over MMIO. The translation consists in applying an
offset with reg_base, then downshifting the registers by 2. This
actually changes the register stride from 4 to 1.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
---
 drivers/mfd/ocelot-spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/ocelot-spi.c b/drivers/mfd/ocelot-spi.c
index 2d1349a10ca9..107cda0544aa 100644
--- a/drivers/mfd/ocelot-spi.c
+++ b/drivers/mfd/ocelot-spi.c
@@ -124,7 +124,7 @@ static int ocelot_spi_initialize(struct device *dev)
 
 static const struct regmap_config ocelot_spi_regmap_config = {
 	.reg_bits = 24,
-	.reg_stride = 4,
+	.reg_stride = 1,
 	.reg_shift = REGMAP_DOWNSHIFT(2),
 	.val_bits = 32,
 
-- 
2.39.2