sugar/linux
1
0
Fork 0
Code Activity

scsi: ufs: host: mediatek: Adjust sync length for FASTAUTO mode

Browse Source 
Set the sync length for FASTAUTO G1 mode in the UFS Mediatek
driver. This ensures the sync length meets minimum values for high-speed
gears, improving stability during power mode changes.

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
Link: https://patch.msgid.link/20250924094527.2992256-5-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Peter Wang
2025-09-24 17:43:26 +08:00
committed by Martin K. Petersen
parent 16b42c4281
commit 1fd05367d5
2 changed files with 38 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/ufs/host/ufs-mediatek.c
View File

@@ -1332,6 +1332,36 @@ static bool ufs_mtk_pmc_via_fastauto(struct ufs_hba *hba,
return true;
}
static void ufs_mtk_adjust_sync_length(struct ufs_hba *hba)
{
int i;
u32 value;
u32 cnt, att, min;
struct attr_min {
u32 attr;
u32 min_value;
} pa_min_sync_length[] = {
{PA_TXHSG1SYNCLENGTH, 0x48},
{PA_TXHSG2SYNCLENGTH, 0x48},
{PA_TXHSG3SYNCLENGTH, 0x48},
{PA_TXHSG4SYNCLENGTH, 0x48},
{PA_TXHSG5SYNCLENGTH, 0x48}
};
cnt = sizeof(pa_min_sync_length) / sizeof(struct attr_min);
for (i = 0; i < cnt; i++) {
att = pa_min_sync_length[i].attr;
min = pa_min_sync_length[i].min_value;
ufshcd_dme_get(hba, UIC_ARG_MIB(att), &value);
if (value < min)
ufshcd_dme_set(hba, UIC_ARG_MIB(att), min);
ufshcd_dme_peer_get(hba, UIC_ARG_MIB(att), &value);
if (value < min)
ufshcd_dme_peer_set(hba, UIC_ARG_MIB(att), min);
}
}
static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba,
const struct ufs_pa_layer_attr *dev_max_params,
struct ufs_pa_layer_attr *dev_req_params)
@@ -1355,6 +1385,8 @@ static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba,
}
if (ufs_mtk_pmc_via_fastauto(hba, dev_req_params)) {
ufs_mtk_adjust_sync_length(hba);
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), true);
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXGEAR), UFS_HS_G1);

7
include/ufs/unipro.h
View File

@@ -111,6 +111,9 @@
#define PA_TXLINKSTARTUPHS 0x1544
#define PA_AVAILRXDATALANES 0x1540
#define PA_MINRXTRAILINGCLOCKS 0x1543
#define PA_TXHSG1SYNCLENGTH 0x1552
#define PA_TXHSG2SYNCLENGTH 0x1554
#define PA_TXHSG3SYNCLENGTH 0x1556
#define PA_LOCAL_TX_LCC_ENABLE 0x155E
#define PA_ACTIVETXDATALANES 0x1560
#define PA_CONNECTEDTXDATALANES 0x1561
@@ -160,7 +163,9 @@
#define PA_PACPFRAMECOUNT 0x15C0
#define PA_PACPERRORCOUNT 0x15C1
#define PA_PHYTESTCONTROL 0x15C2
#define PA_TXHSADAPTTYPE 0x15D4
#define PA_TXHSG4SYNCLENGTH 0x15D0
#define PA_TXHSADAPTTYPE 0x15D4
#define PA_TXHSG5SYNCLENGTH 0x15D6
/* Adpat type for PA_TXHSADAPTTYPE attribute */
#define PA_REFRESH_ADAPT 0x00