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bus: ti-sysc: Implement quirk handling for CLKDM_NOAUTO

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For dra7 dcan and dwc3 instances we need to block clockdomain autoidle.
Let's do this with CLKDM_NOAUTO quirk flag and enable it for dcan and
dwc3.

Cc: Keerthy <j-keerthy@ti.com>
Cc: Roger Quadros <rogerq@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2019-12-12 08:57:58 -08:00
parent e709ed70d1
commit 94f6345712
2 changed files with 9 additions and 2 deletions
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10
drivers/bus/ti-sysc.c
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@ -473,7 +473,7 @@ static void sysc_clkdm_deny_idle(struct sysc *ddata)
{
struct ti_sysc_platform_data *pdata;
if (ddata->legacy_mode)
if (ddata->legacy_mode || (ddata->cfg.quirks & SYSC_QUIRK_CLKDM_NOAUTO))
return;
pdata = dev_get_platdata(ddata->dev);
@ -485,7 +485,7 @@ static void sysc_clkdm_allow_idle(struct sysc *ddata)
{
struct ti_sysc_platform_data *pdata;
if (ddata->legacy_mode)
if (ddata->legacy_mode || (ddata->cfg.quirks & SYSC_QUIRK_CLKDM_NOAUTO))
return;
pdata = dev_get_platdata(ddata->dev);
@ -1245,6 +1245,12 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = {
/* Quirks that need to be set based on detected module */
SYSC_QUIRK("aess", 0, 0, 0x10, -1, 0x40000000, 0xffffffff,
SYSC_MODULE_QUIRK_AESS),
SYSC_QUIRK("dcan", 0x48480000, 0x20, -1, -1, 0xa3170504, 0xffffffff,
SYSC_QUIRK_CLKDM_NOAUTO),
SYSC_QUIRK("dwc3", 0x48880000, 0, 0x10, -1, 0x500a0200, 0xffffffff,
SYSC_QUIRK_CLKDM_NOAUTO),
SYSC_QUIRK("dwc3", 0x488c0000, 0, 0x10, -1, 0x500a0200, 0xffffffff,
SYSC_QUIRK_CLKDM_NOAUTO),
SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x00000006, 0xffffffff,
SYSC_MODULE_QUIRK_HDQ1W),
SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x0000000a, 0xffffffff,

1
include/linux/platform_data/ti-sysc.h
View File

@ -49,6 +49,7 @@ struct sysc_regbits {
s8 emufree_shift;
};
#define SYSC_QUIRK_CLKDM_NOAUTO BIT(21)
#define SYSC_QUIRK_FORCE_MSTANDBY BIT(20)
#define SYSC_MODULE_QUIRK_AESS BIT(19)
#define SYSC_MODULE_QUIRK_SGX BIT(18)