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i2c: designware: Fix RX FIFO depth define on Wangxun 10Gb NIC

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[ Upstream commit c94612a72ac87b0337a0d85b9263266776ed4190 ]

I believe RX FIFO depth define 0 is incorrect on Wangxun 10Gb NIC. It
must be at least 1 since code is able to read received data from the
DW_IC_DATA_CMD register.

For now this define is irrelevant since the txgbe_i2c_dw_xfer_quirk()
doesn't use the rx_fifo_depth member variable of struct dw_i2c_dev but
is needed when converting code into generic polling mode implementation.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jarkko Nikula 2024-02-13 14:48:46 +02:00 committed by Greg Kroah-Hartman
parent cd0a1835bf
commit 30930f0f46
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/busses/i2c-designware-core.h
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@ -318,7 +318,7 @@ struct dw_i2c_dev {
#define AMD_UCSI_INTR_EN 0xd
#define TXGBE_TX_FIFO_DEPTH 4
#define TXGBE_RX_FIFO_DEPTH 0
#define TXGBE_RX_FIFO_DEPTH 1
struct i2c_dw_semaphore_callbacks {
int (*probe)(struct dw_i2c_dev *dev);