[PATCH] power: domain: ti: Extend use of PTCMD and PTSTAT registers for high PDs
Dave Gerlach
d-gerlach at ti.com
Sat Apr 2 03:02:48 CEST 2022
It is possible for power domain IDs to be great than 31. If this
happens, the PTCMD and PTSTAT registers must overflow into adjacent
corresponding PTCMD_H and PTSTAT_H registers for each. Update the driver
to account for this.
Signed-off-by: Dave Gerlach <d-gerlach at ti.com>
---
drivers/power/domain/ti-power-domain.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)
diff --git a/drivers/power/domain/ti-power-domain.c b/drivers/power/domain/ti-power-domain.c
index b45e9b824539..cf20acd1a322 100644
--- a/drivers/power/domain/ti-power-domain.c
+++ b/drivers/power/domain/ti-power-domain.c
@@ -16,7 +16,9 @@
#include <linux/iopoll.h>
#define PSC_PTCMD 0x120
+#define PSC_PTCMD_H 0x124
#define PSC_PTSTAT 0x128
+#define PSC_PTSTAT_H 0x12C
#define PSC_PDSTAT 0x200
#define PSC_PDCTL 0x300
#define PSC_MDSTAT 0x800
@@ -115,10 +117,17 @@ static int ti_power_domain_probe(struct udevice *dev)
static int ti_pd_wait(struct ti_pd *pd)
{
u32 ptstat;
+ u32 pdoffset = 0;
+ u32 ptstatreg = PSC_PTSTAT;
int ret;
- ret = readl_poll_timeout(pd->psc->base + PSC_PTSTAT, ptstat,
- !(ptstat & BIT(pd->id)), PD_TIMEOUT);
+ if (pd->id > 31) {
+ pdoffset = 32;
+ ptstatreg = PSC_PTSTAT_H;
+ }
+
+ ret = readl_poll_timeout(pd->psc->base + ptstatreg, ptstat,
+ !(ptstat & BIT(pd->id - pdoffset)), PD_TIMEOUT);
if (ret)
printf("%s: psc%d, pd%d failed to transition.\n", __func__,
@@ -129,7 +138,15 @@ static int ti_pd_wait(struct ti_pd *pd)
static void ti_pd_transition(struct ti_pd *pd)
{
- psc_write(BIT(pd->id), pd->psc, PSC_PTCMD);
+ u32 pdoffset = 0;
+ u32 ptcmdreg = PSC_PTCMD;
+
+ if (pd->id > 31) {
+ pdoffset = 32;
+ ptcmdreg = PSC_PTCMD_H;
+ }
+
+ psc_write(BIT(pd->id - pdoffset), pd->psc, ptcmdreg);
}
u8 ti_pd_state(struct ti_pd *pd)
--
2.35.0
More information about the U-Boot
mailing list