linux-kernel - [PATCH] soc: imx: Add i.MX8MN SoC driver support

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Message-Id: <20190611013125.3434-1-Anson.Huang@nxp.com>
Date:   Tue, 11 Jun 2019 09:31:25 +0800
From:   Anson.Huang@....com
To:     shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, leonard.crestez@....com,
        viresh.kumar@...aro.org, abel.vesa@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH] soc: imx: Add i.MX8MN SoC driver support

From: Anson Huang <Anson.Huang@....com>

This patch adds i.MX8MN SoC driver support:

root@...8mnevk:~# cat /sys/devices/soc0/family
Freescale i.MX

root@...8mnevk:~# cat /sys/devices/soc0/machine
NXP i.MX8MNano DDR4 EVK board

root@...8mnevk:~# cat /sys/devices/soc0/soc_id
i.MX8MN

root@...8mnevk:~# cat /sys/devices/soc0/revision
1.0

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 drivers/soc/imx/soc-imx8.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/imx/soc-imx8.c b/drivers/soc/imx/soc-imx8.c
index 3842d09..02309a2 100644
--- a/drivers/soc/imx/soc-imx8.c
+++ b/drivers/soc/imx/soc-imx8.c
@@ -55,7 +55,12 @@ static u32 __init imx8mm_soc_revision(void)
 	void __iomem *anatop_base;
 	u32 rev;
 
-	np = of_find_compatible_node(NULL, NULL, "fsl,imx8mm-anatop");
+	if (of_machine_is_compatible("fsl,imx8mm"))
+		np = of_find_compatible_node(NULL, NULL, "fsl,imx8mm-anatop");
+	else if (of_machine_is_compatible("fsl,imx8mn"))
+		np = of_find_compatible_node(NULL, NULL, "fsl,imx8mn-anatop");
+	else
+		np = NULL;
 	if (!np)
 		return 0;
 
@@ -79,9 +84,15 @@ static const struct imx8_soc_data imx8mm_soc_data = {
 	.soc_revision = imx8mm_soc_revision,
 };
 
+static const struct imx8_soc_data imx8mn_soc_data = {
+	.name = "i.MX8MN",
+	.soc_revision = imx8mm_soc_revision,
+};
+
 static const struct of_device_id imx8_soc_match[] = {
 	{ .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
 	{ .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, },
+	{ .compatible = "fsl,imx8mn", .data = &imx8mn_soc_data, },
 	{ }
 };
 
-- 
2.7.4