From: Peng Fan <peng.fan@nxp.com>
Date: Sun, 3 May 2020 13:58:51 +0000 (+0800)
Subject: cpu: imx8: reimplement get cpu count
X-Git-Tag: v2020.10~225^2~73
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=adb3bd7654467765ecb271a21953739679638f01;p=platform%2Fkernel%2Fu-boot.git

cpu: imx8: reimplement get cpu count

Return 4 is not correct on i.MX8DX/DXL/8QM and etc. we need to count
available cpu node with device_type "cpu".

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c
index 95653683ac..7c54c290b8 100644
--- a/drivers/cpu/imx8_cpu.c
+++ b/drivers/cpu/imx8_cpu.c
@@ -118,7 +118,24 @@ static int cpu_imx_get_info(struct udevice *dev, struct cpu_info *info)
 
 static int cpu_imx_get_count(struct udevice *dev)
 {
-	return 4;
+	ofnode node;
+	int num = 0;
+
+	ofnode_for_each_subnode(node, dev_ofnode(dev->parent)) {
+		const char *device_type;
+
+		if (!ofnode_is_available(node))
+			continue;
+
+		device_type = ofnode_read_string(node, "device_type");
+		if (!device_type)
+			continue;
+
+		if (!strcmp(device_type, "cpu"))
+			num++;
+	}
+
+	return num;
 }
 
 static int cpu_imx_get_vendor(struct udevice *dev,  char *buf, int size)