add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/mips/alchemy/board-mtx1.c
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@@ -1,21 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * MTX-1 platform devices registration (Au1500)
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  *
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  * Copyright (C) 2007-2009, Florian Fainelli <florian@openwrt.org>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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  */
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 #include <linux/init.h>
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@@ -24,6 +11,7 @@
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 #include <linux/platform_device.h>
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 #include <linux/leds.h>
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 #include <linux/gpio.h>
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+#include <linux/gpio/machine.h>
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 #include <linux/gpio_keys.h>
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 #include <linux/input.h>
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 #include <linux/mtd/partitions.h>
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@@ -40,23 +28,6 @@
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 const char *get_system_type(void)
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 {
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 	return "MTX-1";
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-}
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-
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-void __init prom_init(void)
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-{
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-	unsigned char *memsize_str;
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-	unsigned long memsize;
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-
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-	prom_argc = fw_arg0;
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-	prom_argv = (char **)fw_arg1;
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-	prom_envp = (char **)fw_arg2;
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-
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-	prom_init_cmdline();
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-
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-	memsize_str = prom_getenv("memsize");
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-	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
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-		memsize = 0x04000000;
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-	add_memory_region(0, memsize, BOOT_MEM_RAM);
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 }
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 void prom_putchar(char c)
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@@ -130,20 +101,18 @@
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 	}
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 };
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-static struct resource mtx1_wdt_res[] = {
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-	[0] = {
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-		.start	= 215,
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-		.end	= 215,
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-		.name	= "mtx1-wdt-gpio",
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-		.flags	= IORESOURCE_IRQ,
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-	}
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+static struct gpiod_lookup_table mtx1_wdt_gpio_table = {
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+	.dev_id = "mtx1-wdt.0",
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+	.table = {
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+		/* Global number 215 is offset 15 on Alchemy GPIO 2 */
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+		GPIO_LOOKUP("alchemy-gpio2", 15, NULL, GPIO_ACTIVE_HIGH),
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+		{ },
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+	},
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 };
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 static struct platform_device mtx1_wdt = {
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 	.name = "mtx1-wdt",
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 	.id = 0,
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-	.num_resources = ARRAY_SIZE(mtx1_wdt_res),
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-	.resource = mtx1_wdt_res,
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 };
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 static const struct gpio_led default_leds[] = {
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@@ -310,6 +279,7 @@
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 	}
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 	gpio_direction_input(mtx1_gpio_button[0].gpio);
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 out:
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+	gpiod_add_lookup_table(&mtx1_wdt_gpio_table);
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 	return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
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 }
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 arch_initcall(mtx1_register_devices);