[PATCH 05/12] bus: ti-sysc: Handle clockactivity for enable and disable

From: Tony Lindgren
Date: Mon May 27 2019 - 08:18:08 EST


Modules with clockactivity need it configured during enable.

Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
drivers/bus/ti-sysc.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -845,6 +845,7 @@ static void sysc_show_registers(struct sysc *ddata)
}

#define SYSC_IDLE_MASK (SYSC_NR_IDLEMODES - 1)
+#define SYSC_CLOCACT_ICK 2

/* Caller needs to manage sysc_clkdm_deny_idle() and sysc_clkdm_allow_idle() */
static int sysc_enable_module(struct device *dev)
@@ -860,6 +861,12 @@ static int sysc_enable_module(struct device *dev)
regbits = ddata->cap->regbits;
reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]);

+ /* Set CLOCKACTIVITY, we only use it for ick */
+ if (regbits->clkact_shift >= 0 &&
+ (ddata->cfg.quirks & SYSC_QUIRK_USE_CLOCKACT ||
+ ddata->cfg.sysc_val & BIT(regbits->clkact_shift)))
+ reg |= SYSC_CLOCACT_ICK << regbits->clkact_shift;
+
/* Set SIDLE mode */
idlemodes = ddata->cfg.sidlemodes;
if (!idlemodes || regbits->sidle_shift < 0)
--
2.21.0