[PATCH 3/3] cpu: imx8_cpu: fix the mpidr check

[Ye Li]

From: Peng Fan <peng.fan at nxp.com>

The mpidr's type is u32, however dev_read_addr returns a value with type
fdt_addr_t(phys_addr_t) which is 64bit long. So the check never fail.

This patch we still keep mpidr as u32 type, because i.MX8 only has max
two cluster, the higher 32bit will always be 0. Use a variable addr
to do the check, if check pass, assign the lower 32 bit to plat->mpidr.

Signed-off-by: Peng Fan <peng.fan at nxp.com>
Signed-off-by: Ye Li <ye.li at nxp.com>
---
 drivers/cpu/imx8_cpu.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c
index 87c13c33ce8..2bd76ffa739 100644
--- a/drivers/cpu/imx8_cpu.c
+++ b/drivers/cpu/imx8_cpu.c
@@ -380,6 +380,7 @@ static int imx_cpu_probe(struct udevice *dev)
 {
 	struct cpu_imx_plat *plat = dev_get_plat(dev);
 	u32 cpurev;
+	fdt_addr_t addr;
 
 	set_core_data(dev);
 	cpurev = get_cpu_rev();
@@ -387,12 +388,14 @@ static int imx_cpu_probe(struct udevice *dev)
 	get_imx_rev_str(plat, cpurev & 0xFFF);
 	plat->type = get_imx_type_str((cpurev & 0x1FF000) >> 12);
 	plat->freq_mhz = imx_get_cpu_rate(dev) / 1000000;
-	plat->mpidr = dev_read_addr(dev);
-	if (plat->mpidr == FDT_ADDR_T_NONE) {
+	addr = dev_read_addr(dev);
+	if (addr == FDT_ADDR_T_NONE) {
 		printf("%s: Failed to get CPU reg property\n", __func__);
 		return -EINVAL;
 	}
 
+	plat->mpidr = (u32)addr;
+
 	return 0;
 }
 
-- 
2.37.1