Messages in this thread Patch in this message | | | From | Cyrille Pitchen <> | Subject | [PATCH 2/3] i2c: at91: print hardware version | Date | Fri, 29 May 2015 15:50:09 +0200 |
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The probe() function now prints the hardware version of the I2C controller
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> --- drivers/i2c/busses/i2c-at91.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index b48be58..1549b29 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -85,6 +85,8 @@ #define AT91_TWI_ACR_DATAL(len) ((len) & 0xff) #define AT91_TWI_ACR_DIR (1 << 8) +#define AT91_TWI_VER 0x00fc /* Version Register */ + struct at91_twi_pdata { unsigned clk_max_div; unsigned clk_offset; @@ -867,6 +869,8 @@ static int at91_twi_probe(struct platform_device *pdev) return rc; } + dev_info(dev->dev, "version: 0x%x\n", at91_twi_read(dev, AT91_TWI_VER)); + rc = of_property_read_u32(dev->dev->of_node, "clock-frequency", &bus_clk_rate); if (rc) -- 1.8.2.2
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