[RFC 4/7] mfd: ocelot-spi: Change the regmap stride to reflect the real one

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	[thread overview]
Message-ID: <20230324093644.464704-5-maxime.chevallier@bootlin.com> (raw)
In-Reply-To: <20230324093644.464704-1-maxime.chevallier@bootlin.com>

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

