Commit fdb487f5 authored by Chao Xie Linux's avatar Chao Xie Linux Committed by Russell King
Browse files

ARM: 8015/1: Add cpu_is_pj4 to distinguish PJ4 because it has some differences with V7



The patch add cpu_is_pj4 at arch/arm/include/asm/cputype.h
PJ4 has some differences with V7, for example the coprocessor.
To disinguish this kind of situation. cpu_is_pj4 is needed.
Signed-off-by: default avatarChao Xie <chao.xie@marvell.com>
Reviewed-by: default avatarKevin Hilman <khilman@linaro.org>
Tested-by: default avatarKevin Hilman <khilman@linaro.org>
Tested-by: default avatarStephen Warren <swarren@nvidia.com>
Reviewed-by: default avatarStephen Warren <swarren@nvidia.com>
Tested-by: default avatarMatt Porter <mporter@linaro.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 779dd959
......@@ -221,4 +221,23 @@ static inline int cpu_is_xsc3(void)
#define cpu_is_xscale() 1
#endif
/*
* Marvell's PJ4 core is based on V7 version. It has some modification
* for coprocessor setting. For this reason, we need a way to distinguish
* it.
*/
#ifndef CONFIG_CPU_PJ4
#define cpu_is_pj4() 0
#else
static inline int cpu_is_pj4(void)
{
unsigned int id;
id = read_cpuid_id();
if ((id & 0xfffffff0) == 0x562f5840)
return 1;
return 0;
}
#endif
#endif
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment