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i2c: ocores: Add support for bus clock via platform data

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Add the I2C bus clock speed to the platform data structure.
If not set, default to 100KHz as before.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Andrew Lunn 2019-02-14 04:24:50 +01:00 committed by Wolfram Sang
parent 809445d4b7
commit 237b5f66e1
2 changed files with 5 additions and 1 deletions
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5
drivers/i2c/busses/i2c-ocores.c
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@ -628,7 +628,10 @@ static int ocores_i2c_probe(struct platform_device *pdev)
i2c->reg_shift = pdata->reg_shift;
i2c->reg_io_width = pdata->reg_io_width;
i2c->ip_clock_khz = pdata->clock_khz;
i2c->bus_clock_khz = 100;
if (pdata->bus_khz)
i2c->bus_clock_khz = pdata->bus_khz;
else
i2c->bus_clock_khz = 100;
} else {
ret = ocores_i2c_of_probe(pdev, i2c);
if (ret)

1
include/linux/platform_data/i2c-ocores.h
View File

@ -12,6 +12,7 @@ struct ocores_i2c_platform_data {
u32 reg_shift; /* register offset shift value */
u32 reg_io_width; /* register io read/write width */
u32 clock_khz; /* input clock in kHz */
u32 bus_khz; /* bus clock in kHz */
bool big_endian; /* registers are big endian */
u8 num_devices; /* number of devices in the devices list */
struct i2c_board_info const *devices; /* devices connected to the bus */