drivers:ufs: fix hynix ufs bug with quirk on hi36xx SoC
Hynix ufs has deviations on hi36xx platform which will result
in ufs bursts transfer failures at a very low probability.
To fix the problem, the Hynix device must set the register
VS_DebugSaveConfigTime to 0x10, which will set time reference
for SaveConfigTime is 250 ns. The time reference for SaveConfigTime
is 40 ns by default.
Signed-off-by: fengbaopeng <fengbaopeng@hisilicon.com>
diff --git a/drivers/synopsys/ufs/dw_ufs.c b/drivers/synopsys/ufs/dw_ufs.c
index d8ed5b6..b0ea3e7 100644
--- a/drivers/synopsys/ufs/dw_ufs.c
+++ b/drivers/synopsys/ufs/dw_ufs.c
@@ -97,10 +97,21 @@
int result;
unsigned int data, tx_lanes, rx_lanes;
uintptr_t base;
+ unsigned int flags;
assert((params != NULL) && (params->reg_base != 0));
base = params->reg_base;
+ flags = params->flags;
+ if ((flags & UFS_FLAGS_VENDOR_SKHYNIX) != 0U) {
+ NOTICE("ufs: H**** device must set VS_DebugSaveConfigTime 0x10\n");
+ /* VS_DebugSaveConfigTime */
+ result = ufshc_dme_set(0xd0a0, 0x0, 0x10);
+ assert(result == 0);
+ /* sync length */
+ result = ufshc_dme_set(0x1556, 0x0, 0x48);
+ assert(result == 0);
+ }
result = ufshc_dme_get(PA_TACTIVATE_OFFSET, 0, &data);
assert(result == 0);