android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge "scsi: ufs-qcom: configure ufs clocks core memory"

Browse Source
This commit is contained in:
qctecmdr 2021-11-19 05:21:35 -08:00 committed by Gerrit - the friendly Code Review server
commit f5cebbb404
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/scsi/ufs/ufs-qcom.c
View File

@ -13,6 +13,7 @@
#include <linux/reset-controller.h>
#include <linux/interconnect.h>
#include <linux/phy/phy-qcom-ufs.h>
#include <linux/clk/qcom.h>
#include <linux/devfreq.h>
#include <linux/cpu.h>
#include <linux/blk-mq.h>
@ -672,6 +673,36 @@ static int ufs_qcom_enable_hw_clk_gating(struct ufs_hba *hba)
return err;
}
static void ufs_qcom_force_mem_config(struct ufs_hba *hba)
{
struct ufs_clk_info *clki;
/*
* Configure the behavior of ufs clocks core and peripheral
* memory state when they are turned off.
* This configuration is required to allow retaining
* ICE crypto configuration (including keys) when
* core_clk_ice is turned off, and powering down
* non-ICE RAMs of host controller.
*
* This is applicable only to gcc clocks.
*/
list_for_each_entry(clki, &hba->clk_list_head, list) {
/* skip it for non-gcc (rpmh) clocks */
if (!strcmp(clki->name, "ref_clk"))
continue;
if (!strcmp(clki->name, "core_clk_ice") ||
!strcmp(clki->name, "core_clk_ice_hw_ctl"))
qcom_clk_set_flags(clki->clk, CLKFLAG_RETAIN_MEM);
else
qcom_clk_set_flags(clki->clk, CLKFLAG_NORETAIN_MEM);
qcom_clk_set_flags(clki->clk, CLKFLAG_NORETAIN_PERIPH);
qcom_clk_set_flags(clki->clk, CLKFLAG_PERIPH_OFF_CLEAR);
}
}
static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba,
enum ufs_notify_change_status status)
{
@ -680,6 +711,7 @@ static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba,
switch (status) {
case PRE_CHANGE:
ufs_qcom_force_mem_config(hba);
ufs_qcom_power_up_sequence(hba);
/*
* The PHY PLL output is the source of tx/rx lane symbol