linux-kernel - [PATCH v2 1/4] ARM: hisi: Add S40 IO map

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Date:   Fri, 17 Mar 2023 16:53:44 +0800
From:   David Yang <mmyangfl@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     David Yang <mmyangfl@...il.com>, Wei Xu <xuwei5@...ilicon.com>,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/4] ARM: hisi: Add S40 IO map

Hisilion S40 platform supports ARM Cortex-A9 processors.

Signed-off-by: David Yang <mmyangfl@...il.com>
---
 arch/arm/mach-hisi/hisilicon.c | 35 +++++++++++++++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-hisi/hisilicon.c b/arch/arm/mach-hisi/hisilicon.c
index b8d14b369..2128e6dd5 100644
--- a/arch/arm/mach-hisi/hisilicon.c
+++ b/arch/arm/mach-hisi/hisilicon.c
@@ -46,7 +46,40 @@ static const char *const hi3xxx_compat[] __initconst = {
 	NULL,
 };
 
-DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)")
+DT_MACHINE_START(HI3620, "HiSilicon Hi3620 (Flattened Device Tree)")
 	.map_io		= hi3620_map_io,
 	.dt_compat	= hi3xxx_compat,
 MACHINE_END
+
+#define S40_IOCH1_PHYS_BASE		0xf8000000
+#define S40_IOCH1_VIRT_BASE		0xf9000000
+#define S40_IOCH1_SIZE			0x02000000
+
+static struct map_desc s40_io_desc[] __initdata = {
+	{
+		.pfn		= __phys_to_pfn(S40_IOCH1_PHYS_BASE),
+		.virtual	= S40_IOCH1_VIRT_BASE,
+		.length		= S40_IOCH1_SIZE,
+		.type		= MT_DEVICE,
+	},
+};
+
+static void __init s40_map_io(void)
+{
+	debug_ll_io_init();
+	iotable_init(s40_io_desc, ARRAY_SIZE(s40_io_desc));
+}
+
+static const char *const s40_compat[] __initconst = {
+	"hisilicon,hi3796cv200",
+	"hisilicon,hi3796mv200",
+	"hisilicon,hi3798cv200",
+	"hisilicon,hi3798mv200",
+	"hisilicon,hi3798mv300",
+	NULL,
+};
+
+DT_MACHINE_START(S40, "HiSilicon S40 (Flattened Device Tree)")
+	.map_io		= s40_map_io,
+	.dt_compat	= s40_compat,
+MACHINE_END
-- 
2.39.2