Some domains need quirks during their operation.
For example, on i.MX8MM, USB domains should not be powered off.
Signed-off-by: Adrien Grassein <adrien.grassein@xxxxxxxxx>
---
drivers/soc/imx/gpcv2.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
index 571d0381dd87..592b9808dcd4 100644
--- a/drivers/soc/imx/gpcv2.c
+++ b/drivers/soc/imx/gpcv2.c
@@ -119,6 +119,10 @@
#define GPC_CLK_MAX 6
+/* Quirks */
+//Refuse to poweroff the domain
+#define GPC_QUIRKS_DONT_POWEROFF BIT(0)
+
static DEFINE_MUTEX(gpc_pd_mutex);
struct imx_pgc_domain {
@@ -139,6 +143,7 @@ struct imx_pgc_domain {
const int voltage;
struct device *dev;
+ const unsigned int quirks;
};
struct imx_pgc_domain_data {
@@ -263,6 +268,9 @@ static int imx_gpc_pu_pgc_sw_pdn_req(struct generic_pm_domain *genpd)
int i, ret = 0;
u32 value;
+ if (domain->quirks & GPC_QUIRKS_DONT_POWEROFF)
+ return 0;
+
mutex_lock(&gpc_pd_mutex);
/* Enable reset clocks for all devices in the domain */
@@ -606,6 +614,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = {
.map = IMX8MM_OTG1_A53_DOMAIN,
},
.pgc = IMX8MM_PGC_OTG1,
+ .quirks = GPC_QUIRKS_DONT_POWEROFF,
},
[IMX8MM_POWER_DOMAIN_USB_OTG2] = {
@@ -617,6 +626,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = {
.map = IMX8MM_OTG2_A53_DOMAIN,
},
.pgc = IMX8MM_PGC_OTG2,
+ .quirks = GPC_QUIRKS_DONT_POWEROFF,
},
};
--
2.25.1
