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From ae96ce5f2a5bd76b234cea6fc3f0bf1df74387f3 Mon Sep 17 00:00:00 2001
From: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
Date: Thu, 4 Feb 2021 00:29:55 -0800
Subject: [PATCH] soc: aspeed: add AST2600 A0 specific fix into mbox driver
AST2600 A0 has the same LPC mbox register structure with AST2500
but AST2600 A1 and later revision is different so this commit adds
AST2600 A0 specific fix into the mbox driver.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
---
drivers/soc/aspeed/aspeed-lpc-mbox.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/soc/aspeed/aspeed-lpc-mbox.c b/drivers/soc/aspeed/aspeed-lpc-mbox.c
index 8dd3345682c7..12bb436dda78 100644
--- a/drivers/soc/aspeed/aspeed-lpc-mbox.c
+++ b/drivers/soc/aspeed/aspeed-lpc-mbox.c
@@ -363,6 +363,20 @@ static int aspeed_mbox_probe(struct platform_device *pdev)
return -EINVAL;
config = match->data;
+
+ if (of_device_is_compatible(pdev->dev.of_node,
+ "aspeed,ast2600-mbox")) {
+ #define REV_ID_IO_OFFSET 0x1e6e2014
+ #define REV_ID_AST2600A0 0x05000303
+ void __iomem *chip_id_base = devm_ioremap(&pdev->dev,
+ REV_ID_IO_OFFSET,
+ sizeof(u32));
+
+ if (!IS_ERR(chip_id_base) &&
+ readl(chip_id_base) == REV_ID_AST2600A0)
+ config = &ast2500_config;
+ }
+
memcpy(&mbox->configs, config, sizeof(mbox->configs));
rc = of_property_read_u32(dev->of_node, "reg", &mbox->base);
--
2.17.1
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