OMAP3: add comments for erratas i540 and i478 workarounds
Add comments and IDs for the following erratas:
- i540: MPU cannot exit from Standby,
- i478: Unexpected Cold-Reset is generated when device is coming
back from OFF mode
Signed-off-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/powerdomains34xx.h b/arch/arm/mach-omap2/powerdomains34xx.h
index fa90486..ce5c15b 100644
--- a/arch/arm/mach-omap2/powerdomains34xx.h
+++ b/arch/arm/mach-omap2/powerdomains34xx.h
@@ -80,6 +80,10 @@
* 3430s upto ES3.0 and 3630ES1.0. Hence this feature
* needs to be disabled on these chips.
* Refer: 3430 errata ID i459 and 3630 errata ID i579
+ *
+ * Note: setting the SAR flag could help for errata ID i478
+ * which applies to 3430 <= ES3.1, but since the SAR feature
+ * is broken, do not use it.
*/
static struct powerdomain core_3xxx_pre_es3_1_pwrdm = {
.name = "core_pwrdm",
@@ -108,6 +112,10 @@
CHIP_GE_OMAP3630ES1_1),
.pwrsts = PWRSTS_OFF_RET_ON,
.pwrsts_logic_ret = PWRSTS_OFF_RET,
+ /*
+ * Setting the SAR flag for errata ID i478 which applies
+ * to 3430 <= ES3.1
+ */
.flags = PWRDM_HAS_HDWR_SAR, /* for USBTLL only */
.banks = 2,
.pwrsts_mem_ret = {