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soc: imx: gpcv2: move reset assert after requesting domain power up

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The i.MX8MM VPU power up sequence is a bit special, it must follow:
1. request power up
2. reset assert
3. reset deassert

This change in this patch will not affect other domains, because
the power domain default is in asserted state, unless bootloader
deassert the reset. It also applies to GPU power domain.

Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Peng Fan 2021-05-10 12:00:45 +08:00 committed by Shawn Guo
parent a36cc1e512
commit acad945dc2
1 changed files with 2 additions and 2 deletions
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4
drivers/soc/imx/gpcv2.c
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@ -217,8 +217,6 @@ static int imx_pgc_power_up(struct generic_pm_domain *genpd)
goto out_regulator_disable;
}
reset_control_assert(domain->reset);
if (domain->bits.pxx) {
/* request the domain to power up */
regmap_update_bits(domain->regmap, GPC_PU_PGC_SW_PUP_REQ,
@ -241,6 +239,8 @@ static int imx_pgc_power_up(struct generic_pm_domain *genpd)
GPC_PGC_CTRL_PCR);
}
reset_control_assert(domain->reset);
/* delay for reset to propagate */
udelay(5);