The probe() function now prints the hardware version of the I2C controller
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@xxxxxxxxx>
---
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 e926806..ecf601a 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 BIT(8)
+#define AT91_TWI_VER 0x00fc /* Version Register */
+
struct at91_twi_pdata {
unsigned clk_max_div;
unsigned clk_offset;
@@ -870,6 +872,8 @@ 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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