Commit c40cbad6 authored by Laurentiu Tudor's avatar Laurentiu Tudor Committed by Greg Kroah-Hartman
Browse files

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: default avatarLaurentiu Tudor <laurentiu.tudor@nxp.com>
Link: https://lore.kernel.org/r/20210715140718.8513-3-laurentiu.tudor@nxp.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f8cfa9bb

drivers/bus/fsl-mc/fsl-mc-bus.c

+3 −1
Original line number Diff line number Diff line
@@ -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);

	}