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i2c: nomadik: support Mobileye EyeQ6H I2C controller

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Add EyeQ6H support to the nmk-i2c AMBA driver. It shares the same quirk
as EyeQ5: the memory bus only supports 32-bit accesses. Avoid writeb()
and readb() by reusing the same `priv->has_32b_bus` flag.

It does NOT need to write speed-mode specific value into a register;
therefore it does not depend on the mobileye,olb DT property.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
This commit is contained in:
Théo Lebrun
2024-10-09 16:01:10 +02:00
committed by Wolfram Sang
parent a0d15cc47f
commit 814a3225f4
1 changed files with 6 additions and 2 deletions
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8
drivers/i2c/busses/i2c-nomadik.c
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@@ -6,10 +6,10 @@
* I2C master mode controller driver, used in Nomadik 8815
* and Ux500 platforms.
*
* The Mobileye EyeQ5 platform is also supported; it uses
* The Mobileye EyeQ5 and EyeQ6H platforms are also supported; they use
* the same Ux500/DB8500 IP block with two quirks:
* - The memory bus only supports 32-bit accesses.
* - A register must be configured for the I2C speed mode;
* - (only EyeQ5) A register must be configured for the I2C speed mode;
* it is located in a shared register region called OLB.
*
* Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
@@ -1075,6 +1075,10 @@ static const struct of_device_id nmk_i2c_eyeq_match_table[] = {
.compatible = "mobileye,eyeq5-i2c",
.data = (void *)(NMK_I2C_EYEQ_FLAG_32B_BUS | NMK_I2C_EYEQ_FLAG_IS_EYEQ5),
},
{
.compatible = "mobileye,eyeq6h-i2c",
.data = (void *)NMK_I2C_EYEQ_FLAG_32B_BUS,
},
};
static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id)