arch: arm: meson: support Amlogic chip_id v1 and v2
Patch introduces:
* chip_id API - useful for various things, but used now for
device_id (did) generation as mentioned in [1] on our private board
code. Our device_id is calculated by means of permutations of
chip_id value.
* new SoCs (a1, s4, etc) are usually coming with the support of chip_id
v2 right away, whereas secure monitors on old SoCs (like axg, g12b,
g12a, etc) may support only chip_id v1. Chip_id API handles both
cases
* meson_sm_get_serial() is described via chip_id API.
Links:
[1] https://lore.kernel.org/linux-arm-kernel/202311242104.RjBPI3uI-lkp@intel.com/T/#m630fbeea6a6e7d531290b5c0af205af4fb979757
Signed-off-by: Viacheslav Bocharov <adeep@lexina.in>
Co-developed-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Signed-off-by: Evgeny Bachinin <EABachinin@salutedevices.com>
Link: https://lore.kernel.org/r/20250210-meson_chip_id_all_vers-v1-3-b98f8b6880b8@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
diff --git a/arch/arm/mach-meson/board-info.c b/arch/arm/mach-meson/board-info.c
index 94b0661..d3807dc 100644
--- a/arch/arm/mach-meson/board-info.c
+++ b/arch/arm/mach-meson/board-info.c
@@ -126,7 +126,7 @@
return "Unknown";
}
-static u32 get_socinfo(void)
+u32 meson_get_socinfo(void)
{
struct regmap *regmap;
int nodeoffset, ret;
@@ -165,7 +165,7 @@
{
u32 socinfo;
- socinfo = get_socinfo();
+ socinfo = meson_get_socinfo();
if (!socinfo)
return 0;
@@ -184,7 +184,7 @@
{
u32 socinfo;
- socinfo = get_socinfo();
+ socinfo = meson_get_socinfo();
if (!socinfo)
return -1;