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| author | Anson Huang <b20788@freescale.com> | 2021-05-26 03:14:16 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2021-06-12 07:02:57 +0300 |
| commit | e34645f45805d8308866de7b69f117f554605bb6 (patch) | |
| tree | 728088350539c203ab9e19c38de9feac943cacc5 /arch/arm/mach-imx/common.h | |
| parent | cc8870bf4c3ab0af385538460500a9d342ed945f (diff) | |
| download | linux-e34645f45805d8308866de7b69f117f554605bb6.tar.xz | |
ARM: imx: add smp support for imx7d
Add SMP support for i.MX7D, including CPU hotplug support, for
systems where TFA is not present.
The motivation for bringing up the second i.MX7D core inside the kernel
is that legacy vendor bootloaders usually do not implement PSCI support.
This is a significant blocker for systems in the field that are running old
bootloader versions to upgrade to a modern mainline kernel version, as only
one CPU of the i.MX7D would be brought up.
Bring up the second i.MX7D core inside the kernel to make the migration
path to mainline kernel easier for the existing iMX7D users.
Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Arulpandiyan Vadivel <arulpandiyan_vadivel@mentor.com> # Fix merge conflicts
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Marek Vasut <marex@denx.de> # heavy cleanup
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/mach-imx/common.h')
| -rw-r--r-- | arch/arm/mach-imx/common.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index 474dedb73bc7..f0a073a71401 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -68,11 +68,13 @@ void imx_set_cpu_arg(int cpu, u32 arg); void v7_secondary_startup(void); void imx_scu_map_io(void); void imx_smp_prepare(void); +void imx_gpcv2_set_core1_pdn_pup_by_software(bool pdn); #else static inline void imx_scu_map_io(void) {} static inline void imx_smp_prepare(void) {} #endif void imx_src_init(void); +void imx7_src_init(void); void imx_gpc_pre_suspend(bool arm_power_off); void imx_gpc_post_resume(void); void imx_gpc_mask_all(void); @@ -131,6 +133,7 @@ static inline void imx_init_l2cache(void) {} #endif extern const struct smp_operations imx_smp_ops; +extern const struct smp_operations imx7_smp_ops; extern const struct smp_operations ls1021a_smp_ops; #endif |