Hello York,
Am 19.03.2015 17:45, schrieb York Sun:
This erratum requires setting GLITCH_EN bit in debug register.
Signed-off-by: York Sun yorksun@freescale.com
arch/arm/cpu/armv8/fsl-lsch3/soc.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/soc.c b/arch/arm/cpu/armv8/fsl-lsch3/soc.c index ca00108..4d9df20 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/soc.c +++ b/arch/arm/cpu/armv8/fsl-lsch3/soc.c @@ -37,11 +37,41 @@ static void erratum_rcw_src(void) #endif }
+#define I2C_DEBUG_REG 0x6 +#define I2C_GLITCH_EN 0x8 +static void erratum_i2c(void)
Could you add here a short comment, where to find some info about this erratum? Thanks!
+{
- u8 __iomem *ptr;
+#ifdef CONFIG_SYS_I2C +#ifdef I2C1_BASE_ADDR
- ptr = (u8 __iomem *)(I2C1_BASE_ADDR + I2C_DEBUG_REG);
using a struct here would be nicer ...
bye, Heiko
- writeb(I2C_GLITCH_EN, ptr);
+#endif +#ifdef I2C2_BASE_ADDR
- ptr = (u8 __iomem *)(I2C2_BASE_ADDR + I2C_DEBUG_REG);
- writeb(I2C_GLITCH_EN, ptr);
+#endif +#ifdef I2C3_BASE_ADDR
- ptr = (u8 __iomem *)(I2C3_BASE_ADDR + I2C_DEBUG_REG);
- writeb(I2C_GLITCH_EN, ptr);
+#endif +#ifdef I2C4_BASE_ADDR
- ptr = (u8 __iomem *)(I2C4_BASE_ADDR + I2C_DEBUG_REG);
- writeb(I2C_GLITCH_EN, ptr);
+#endif +#endif +}
void fsl_lsch3_early_init_f(void) { erratum_a008751(); erratum_rcw_src(); init_early_memctl_regs(); /* tighten IFC timing */
erratum_i2c(); }
#ifdef CONFIG_SPL_BUILD