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bus: ti-sysc: Ignore clockactivity unless specified as a quirk
We must ignore the clockactivity bit for most modules and not set it
unless specified for the module with SYSC_QUIRK_USE_CLOCKACT. Otherwise
the interface clock can be automatically gated constantly causing
unexpected performance issues.
Fixes: ae9ae12e9d
("bus: ti-sysc: Handle clockactivity for enable and disable")
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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08b91dd6e5
@ -988,10 +988,13 @@ static int sysc_enable_module(struct device *dev)
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regbits = ddata->cap->regbits;
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reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]);
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/* Set CLOCKACTIVITY, we only use it for ick */
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/*
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* Set CLOCKACTIVITY, we only use it for ick. And we only configure it
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* based on the SYSC_QUIRK_USE_CLOCKACT flag, not based on the hardware
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* capabilities. See the old HWMOD_SET_DEFAULT_CLOCKACT flag.
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*/
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if (regbits->clkact_shift >= 0 &&
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(ddata->cfg.quirks & SYSC_QUIRK_USE_CLOCKACT ||
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ddata->cfg.sysc_val & BIT(regbits->clkact_shift)))
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(ddata->cfg.quirks & SYSC_QUIRK_USE_CLOCKACT))
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reg |= SYSC_CLOCACT_ICK << regbits->clkact_shift;
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/* Set SIDLE mode */
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