diff options
| author | Peng Fan <peng.fan@nxp.com> | 2020-04-01 17:22:36 +0800 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2020-04-07 15:52:10 +0800 |
| commit | bfbf223ed855d31085d0a6469aa94357ae0c3674 (patch) | |
| tree | 9647c324db3a967fddf7f26637ad417561329f8d /plat/imx/imx8m/imx8mm/include/gpc_reg.h | |
| parent | 3511e46772a04136bbec67267360304c701edc6a (diff) | |
MLK-23727 imx8mp/n: support stop M7
Support stop M7 with SIP call.
Per IC team, to rekick M7 need follow steps.
If M7 already in WFI, perform below steps.
a) Set [0x303A_002C].0=0 [ request SLEEPHOLDREQn ]
b) Wait [0x303A_00EC].1 = 0 [ wait SLEEPHOLDACKn ]
c) Set GPR.CPUWAIT=1
d) Set [0x303A_002C].0=1 [ de-assert SLEEPHOLDREQn ]
e) Set SRC_M7_RCR[3:0] = 0xE0 [ reset M7 core/plat ]
f) Wait SRC_M7_RCR[3:0] = 0x8
g) Init TCM or DDR
h) Set GPR.INITVTOR
i) Set GPR.CPUWAIT=0, M7 starting running
Add a timeout check, if timeout, still perform force reset, in this
way no need to rely on M7 team's image wfi support ready.
Return a1,a2 to caller to check timeout or reset fail.
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'plat/imx/imx8m/imx8mm/include/gpc_reg.h')
| -rw-r--r-- | plat/imx/imx8m/imx8mm/include/gpc_reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/plat/imx/imx8m/imx8mm/include/gpc_reg.h b/plat/imx/imx8m/imx8mm/include/gpc_reg.h index 8e213169..ab6dbf43 100644 --- a/plat/imx/imx8m/imx8mm/include/gpc_reg.h +++ b/plat/imx/imx8m/imx8mm/include/gpc_reg.h @@ -27,6 +27,7 @@ #define PU_PGC_UP_TRG 0xF8 #define CPU_PGC_DN_TRG 0xFC #define PU_PGC_DN_TRG 0x104 +#define LPS_CPU1 0x114 #define A53_CORE0_PGC 0x800 #define A53_PLAT_PGC 0x900 #define PLAT_PGC_PCR 0x900 |