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
next prev parent reply other threads:[~2023-03-24 9:37 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-24 9:36 [RFC 0/7] Introduce a generic regmap-based MDIO driver Maxime Chevallier
2023-03-24 9:36 ` [RFC 1/7] regmap: add a helper to translate the register address Maxime Chevallier
2023-03-24 9:36 ` [RFC 2/7] regmap: check for alignment on translated register addresses Maxime Chevallier
2023-03-24 18:51 ` Mark Brown
2023-03-30 9:45 ` Maxime Chevallier
2023-03-30 14:06 ` Mark Brown
2023-03-30 16:39 ` Colin Foster
2023-03-24 9:36 ` [RFC 3/7] regmap: allow upshifting register addresses before performing operations Maxime Chevallier
2023-03-24 12:08 ` Andrew Lunn
2023-03-24 9:36 ` Maxime Chevallier [this message]
2023-03-24 12:11 ` [RFC 4/7] mfd: ocelot-spi: Change the regmap stride to reflect the real one Andrew Lunn
2023-03-24 12:48 ` Maxime Chevallier
2023-03-24 15:48 ` Colin Foster
2023-03-24 17:56 ` Colin Foster
2023-03-30 9:53 ` Maxime Chevallier
2023-03-27 0:02 ` Andrew Lunn
2023-03-30 9:46 ` Maxime Chevallier
2023-03-24 9:36 ` [RFC 5/7] net: mdio: Introduce a regmap-based mdio driver Maxime Chevallier
2023-04-01 13:41 ` Vladimir Oltean
2023-03-24 9:36 ` [RFC 6/7] net: ethernet: altera-tse: Convert to mdio-regmap and use PCS Lynx Maxime Chevallier
2023-03-24 9:36 ` [RFC 7/7] net: pcs: Drop the TSE PCS driver Maxime Chevallier
2023-05-15 11:48 ` Vladimir Oltean
2023-05-22 6:26 ` Maxime Chevallier
2023-03-24 20:37 ` (subset) [RFC 0/7] Introduce a generic regmap-based MDIO driver Mark Brown
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