ARM: at91: Get the Chip ID of SAMA5D2 SiP
The SAMA5D2 SiP(System in Package) has different Chip IDs in the
CHIPID and CHIP_EXID registers.
Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-at91/armv7/sama5d2_devices.c b/arch/arm/mach-at91/armv7/sama5d2_devices.c
index 978eac2..de1d9b5 100644
--- a/arch/arm/mach-at91/armv7/sama5d2_devices.c
+++ b/arch/arm/mach-at91/armv7/sama5d2_devices.c
@@ -10,11 +10,20 @@
#include <asm/arch/clk.h>
#include <asm/arch/sama5d2.h>
-char *get_cpu_name()
+int cpu_is_sama5d2(void)
{
+ unsigned int chip_id = get_chip_id();
+
+ return ((chip_id == ARCH_ID_SAMA5D2) ||
+ (chip_id == ARCH_ID_SAMA5D2_SIP)) ? 1 : 0;
+}
+
+char *get_cpu_name(void)
+{
+ unsigned int chip_id = get_chip_id();
unsigned int extension_id = get_extension_chip_id();
- if (cpu_is_sama5d2()) {
+ if (chip_id == ARCH_ID_SAMA5D2) {
switch (extension_id) {
case ARCH_EXID_SAMA5D21CU:
return "SAMA5D21";
@@ -41,6 +50,19 @@
}
}
+ if ((chip_id == ARCH_ID_SAMA5D2) || (chip_id == ARCH_ID_SAMA5D2_SIP)) {
+ switch (extension_id) {
+ case ARCH_EXID_SAMA5D225C_D1M:
+ return "SAMA5D225 128M bits DDR2 SDRAM";
+ case ARCH_EXID_SAMA5D27C_D5M:
+ return "SAMA5D27 512M bits DDR2 SDRAM";
+ case ARCH_EXID_SAMA5D27C_D1G:
+ return "SAMA5D27 1G bits DDR2 SDRAM";
+ case ARCH_EXID_SAMA5D28C_D1G:
+ return "SAMA5D28 1G bits DDR2 SDRAM";
+ }
+ }
+
return "Unknown CPU type";
}