shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-04 18:19:28 +09:00
Code Issues Packages Projects Releases Wiki Activity

bus: ti-sysc: Improve reset to work with modules with no sysconfig

Browse Source 
At least display susbsystem (DSS) has modules with no sysconfig registers
and rely on custom function for module reset handling. Let's make reset
work with that too.

Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren
2020-02-24 12:58:03 -08:00
parent e64c021fd9
commit ab4d309d87
1 changed files with 6 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/bus/ti-sysc.c
View File

@@ -1571,7 +1571,7 @@ static int sysc_reset(struct sysc *ddata)
sysc_offset = ddata->offsets[SYSC_SYSCONFIG];
syss_offset = ddata->offsets[SYSC_SYSSTATUS];
if (ddata->legacy_mode || sysc_offset < 0 ||
if (ddata->legacy_mode ||
ddata->cap->regbits->srst_shift < 0 ||
ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)
return 0;
@@ -1586,9 +1586,11 @@ static int sysc_reset(struct sysc *ddata)
if (ddata->pre_reset_quirk)
ddata->pre_reset_quirk(ddata);
sysc_val = sysc_read_sysconfig(ddata);
sysc_val |= sysc_mask;
sysc_write(ddata, sysc_offset, sysc_val);
if (sysc_offset >= 0) {
sysc_val = sysc_read_sysconfig(ddata);
sysc_val |= sysc_mask;
sysc_write(ddata, sysc_offset, sysc_val);
}
if (ddata->cfg.srst_udelay)
usleep_range(ddata->cfg.srst_udelay,