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bus: fsl-mc: fully resume the firmware 

The MC firmware has two execution units. Resume them both, as on some
Layerscape SoCs not doing so breaks the firmware.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Link: https://lore.kernel.org/r/20210715140718.8513-3-laurentiu.tudor@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Laurentiu Tudor 2021-07-15 17:07:13 +03:00 committed by Greg Kroah-Hartman
parent f8cfa9bbab
commit c40cbad63d
1 changed files with 3 additions and 1 deletions
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4
drivers/bus/fsl-mc/fsl-mc-bus.c
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@ -63,6 +63,7 @@ struct fsl_mc_addr_translation_range {
#define FSL_MC_GCR1 0x0
#define GCR1_P1_STOP BIT(31)
#define GCR1_P2_STOP BIT(30)
#define FSL_MC_FAPR 0x28
#define MC_FAPR_PL BIT(18)
@ -1118,7 +1119,8 @@ static int fsl_mc_bus_probe(struct platform_device *pdev)
* At this point MC should have all its SMMU setup done so make
* sure it is resumed.
*/
writel(readl(mc->fsl_mc_regs + FSL_MC_GCR1) & (~GCR1_P1_STOP),
writel(readl(mc->fsl_mc_regs + FSL_MC_GCR1) &
(~(GCR1_P1_STOP | GCR1_P2_STOP)),
mc->fsl_mc_regs + FSL_MC_GCR1);
}