| Message ID | 1524604882-25377-3-git-send-email-austinwc@codeaurora.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On 4/25/2018 2:51 AM, Austin Christ wrote: > Previously the QUP driver limited operation mode to I2C Fast Mode. Add > Fast Mode Plus functionality by raising SCL limit from 400kHz to 1MHz. > > Signed-off-by: Austin Christ <austinwc@codeaurora.org> Reviewed-by: Sricharan R <sricharan@codeaurora.org> Regards, Sricharan > --- > drivers/i2c/busses/i2c-qup.c | 11 ++++++++--- > 1 file changed, 8 insertions(+), 3 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c > index c024f85..ce5f215 100644 > --- a/drivers/i2c/busses/i2c-qup.c > +++ b/drivers/i2c/busses/i2c-qup.c > @@ -136,8 +136,13 @@ > */ > #define TOUT_MIN 2 > > +/* I2C Frequency Modes */ > +#define I2C_STANDARD_FREQ 100000 > +#define I2C_FAST_MODE_FREQ 400000 > +#define I2C_FAST_MODE_PLUS_FREQ 1000000 > + > /* Default values. Use these if FW query fails */ > -#define DEFAULT_CLK_FREQ 100000 > +#define DEFAULT_CLK_FREQ I2C_STANDARD_FREQ > #define DEFAULT_SRC_CLK 20000000 > > /* > @@ -1745,8 +1750,8 @@ static int qup_i2c_probe(struct platform_device *pdev) > } > > nodma: > - /* We support frequencies up to FAST Mode (400KHz) */ > - if (!clk_freq || clk_freq > 400000) { > + /* We support frequencies up to FAST Mode Plus (1MHz) */ > + if (!clk_freq || clk_freq > I2C_FAST_MODE_PLUS_FREQ) { > dev_err(qup->dev, "clock frequency not supported %d\n", > clk_freq); > return -EINVAL; >
diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c index c024f85..ce5f215 100644 --- a/drivers/i2c/busses/i2c-qup.c +++ b/drivers/i2c/busses/i2c-qup.c @@ -136,8 +136,13 @@ */ #define TOUT_MIN 2 +/* I2C Frequency Modes */ +#define I2C_STANDARD_FREQ 100000 +#define I2C_FAST_MODE_FREQ 400000 +#define I2C_FAST_MODE_PLUS_FREQ 1000000 + /* Default values. Use these if FW query fails */ -#define DEFAULT_CLK_FREQ 100000 +#define DEFAULT_CLK_FREQ I2C_STANDARD_FREQ #define DEFAULT_SRC_CLK 20000000 /* @@ -1745,8 +1750,8 @@ static int qup_i2c_probe(struct platform_device *pdev) } nodma: - /* We support frequencies up to FAST Mode (400KHz) */ - if (!clk_freq || clk_freq > 400000) { + /* We support frequencies up to FAST Mode Plus (1MHz) */ + if (!clk_freq || clk_freq > I2C_FAST_MODE_PLUS_FREQ) { dev_err(qup->dev, "clock frequency not supported %d\n", clk_freq); return -EINVAL;
Previously the QUP driver limited operation mode to I2C Fast Mode. Add Fast Mode Plus functionality by raising SCL limit from 400kHz to 1MHz. Signed-off-by: Austin Christ <austinwc@codeaurora.org> --- drivers/i2c/busses/i2c-qup.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)