On 2020-01-24 07:11, Bean Huo (beanhuo) wrote:
Hi, Can
In UFS version 3.0, a newly added attribute bRefClkGatingWaitTime
defines the
minimum time for which the reference clock is required by device
during
transition to LS-MODE or HIBERN8 state. Make this change to reflect
the new
requirement by adding delays before turning off the clock.
Signed-off-by: Can Guo <cang@xxxxxxxxxxxxxx>
---
drivers/scsi/ufs/ufs.h | 3 +++
drivers/scsi/ufs/ufshcd.c | 41
+++++++++++++++++++++++++++++++++++++++++
2 files changed, 44 insertions(+)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index
3327981..385bac8 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -168,6 +168,7 @@ enum attr_idn {
QUERY_ATTR_IDN_FFU_STATUS = 0x14,
QUERY_ATTR_IDN_PSA_STATE = 0x15,
QUERY_ATTR_IDN_PSA_DATA_SIZE = 0x16,
+ QUERY_ATTR_IDN_REF_CLK_GATING_WAIT_TIME = 0x17,
};
/* Descriptor idn for Query requests */ @@ -530,6 +531,8 @@ struct
ufs_dev_info {
bool f_power_on_wp_en;
/* Keeps information if any of the LU is power on write protected */
bool is_lu_power_on_wp;
+ u16 spec_version;
+ u32 clk_gating_wait_us;
};
This one also need rebase
Thanks,
//Bean
Shall rebase this series.
Thanks,
Can Guo
