[U-Boot] [PATCH 02/17] imx8mn: support get_cpu_rev

[Peng Fan]

Add a dummy cpu type and support get_cpu_rev for i.MX8MN

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 arch/arm/include/asm/arch-imx/cpu.h       | 1 +
 arch/arm/include/asm/mach-imx/sys_proto.h | 1 +
 arch/arm/mach-imx/cpu.c                   | 2 ++
 arch/arm/mach-imx/imx8m/soc.c             | 4 +++-
 4 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/arch-imx/cpu.h b/arch/arm/include/asm/arch-imx/cpu.h
index 4296e47b9e..5392c926b0 100644
--- a/arch/arm/include/asm/arch-imx/cpu.h
+++ b/arch/arm/include/asm/arch-imx/cpu.h
@@ -31,6 +31,7 @@
 #define MXC_CPU_IMX8MMDL	0x88 /* dummy ID */
 #define MXC_CPU_IMX8MMS		0x89 /* dummy ID */
 #define MXC_CPU_IMX8MMSL	0x8a /* dummy ID */
+#define MXC_CPU_IMX8MN		0x8b /* dummy ID */
 #define MXC_CPU_IMX8QXP_A0	0x90 /* dummy ID */
 #define MXC_CPU_IMX8QM		0x91 /* dummy ID */
 #define MXC_CPU_IMX8QXP		0x92 /* dummy ID */
diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
index c654c44cce..dde39c63dd 100644
--- a/arch/arm/include/asm/mach-imx/sys_proto.h
+++ b/arch/arm/include/asm/mach-imx/sys_proto.h
@@ -51,6 +51,7 @@
 #define is_imx8mmdl() (is_cpu_type(MXC_CPU_IMX8MMDL))
 #define is_imx8mms() (is_cpu_type(MXC_CPU_IMX8MMS))
 #define is_imx8mmsl() (is_cpu_type(MXC_CPU_IMX8MMSL))
+#define is_imx8mn() (is_cpu_type(MXC_CPU_IMX8MN))
 
 #define is_imx8qm() (is_cpu_type(MXC_CPU_IMX8QM))
 #define is_imx8qxp() (is_cpu_type(MXC_CPU_IMX8QXP))
diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c
index 60d12e6884..1a36bc54fc 100644
--- a/arch/arm/mach-imx/cpu.c
+++ b/arch/arm/mach-imx/cpu.c
@@ -145,6 +145,8 @@ unsigned imx_ddr_size(void)
 const char *get_imx_type(u32 imxtype)
 {
 	switch (imxtype) {
+	case MXC_CPU_IMX8MN:
+		return "8MNano";/* Quad-core version of the imx8mn */
 	case MXC_CPU_IMX8MM:
 		return "8MMQ";	/* Quad-core version of the imx8mm */
 	case MXC_CPU_IMX8MML:
diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c
index f904049120..1909df03ec 100644
--- a/arch/arm/mach-imx/imx8m/soc.c
+++ b/arch/arm/mach-imx/imx8m/soc.c
@@ -197,7 +197,9 @@ u32 get_cpu_rev(void)
 	reg &= 0xff;
 
 	/* i.MX8MM */
-	if (major_low == 0x41) {
+	if (major_low == 0x42) {
+		return (MXC_CPU_IMX8MN << 12) | reg;
+	} else if (major_low == 0x41) {
 		type = get_cpu_variant_type(MXC_CPU_IMX8MM);
 	} else {
 		if (reg == CHIP_REV_1_0) {
-- 
2.16.4