Re: [PATCH v2] i2c: exynos5: Preserve high speed master code
From: Krzysztof Kozlowski <krzk@kernel.org>
Date: 2021-02-17 08:36:23
Also in:
linux-i2c, linux-samsung-soc, lkml
On Tue, Feb 16, 2021 at 11:25:38PM +0100, Mårten Lindahl wrote:
From: Mårten Lindahl <redacted> When the driver starts to send a message with the MASTER_ID field set (high speed), the whole I2C_ADDR register is overwritten including MASTER_ID as the SLV_ADDR_MAS field is set. This patch preserves already written fields in I2C_ADDR when writing SLV_ADDR_MAS. Signed-off-by: Mårten Lindahl <redacted> --- v2: - Change commit message as the problem is not in the controller but in the driver. - Use MASTER_ID macro instead of reading back register contents. drivers/i2c/busses/i2c-exynos5.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Tested-by: Krzysztof Kozlowski <krzk@kernel.org> Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel