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81 lines
2.3 KiB
Diff
81 lines
2.3 KiB
Diff
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From d9215f4c69b414f589eeeff002af7ef58b96b172 Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Mon, 20 Jun 2011 19:26:12 +0200
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Subject: [PATCH 15/27] MIPS: ath79: register UART device for the AR933X SoCs
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The AR933X SoCs does not have a 8250 compatible UART, they
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are using a different UART core. Register a different platform
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device for the different UART.
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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Cc: linux-mips@linux-mips.org
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Cc: Kathy Giori <kgiori@qca.qualcomm.com>
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Cc: "Luis R. Rodriguez" <rodrigue@qca.qualcomm.com>
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Patchwork: https://patchwork.linux-mips.org/patch/2528/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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---
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arch/mips/ath79/dev-common.c | 38 ++++++++++++++++++++++++++++++++++++--
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1 files changed, 36 insertions(+), 2 deletions(-)
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--- a/arch/mips/ath79/dev-common.c
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+++ b/arch/mips/ath79/dev-common.c
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@@ -20,6 +20,7 @@
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#include <asm/mach-ath79/ath79.h>
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#include <asm/mach-ath79/ar71xx_regs.h>
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+#include <asm/mach-ath79/ar933x_uart_platform.h>
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#include "common.h"
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#include "dev-common.h"
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@@ -54,6 +55,30 @@ static struct platform_device ath79_uart
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},
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};
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+static struct resource ar933x_uart_resources[] = {
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+ {
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+ .start = AR933X_UART_BASE,
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+ .end = AR933X_UART_BASE + AR71XX_UART_SIZE - 1,
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+ .flags = IORESOURCE_MEM,
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+ },
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+ {
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+ .start = ATH79_MISC_IRQ_UART,
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+ .end = ATH79_MISC_IRQ_UART,
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+ .flags = IORESOURCE_IRQ,
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+ },
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+};
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+
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+static struct ar933x_uart_platform_data ar933x_uart_data;
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+static struct platform_device ar933x_uart_device = {
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+ .name = "ar933x-uart",
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+ .id = -1,
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+ .resource = ar933x_uart_resources,
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+ .num_resources = ARRAY_SIZE(ar933x_uart_resources),
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+ .dev = {
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+ .platform_data = &ar933x_uart_data,
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+ },
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+};
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+
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void __init ath79_register_uart(void)
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{
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struct clk *clk;
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@@ -62,8 +87,17 @@ void __init ath79_register_uart(void)
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if (IS_ERR(clk))
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panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
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- ath79_uart_data[0].uartclk = clk_get_rate(clk);
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- platform_device_register(&ath79_uart_device);
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+ if (soc_is_ar71xx() ||
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+ soc_is_ar724x() ||
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+ soc_is_ar913x()) {
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+ ath79_uart_data[0].uartclk = clk_get_rate(clk);
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+ platform_device_register(&ath79_uart_device);
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+ } else if (soc_is_ar933x()) {
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+ ar933x_uart_data.uartclk = clk_get_rate(clk);
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+ platform_device_register(&ar933x_uart_device);
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+ } else {
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+ BUG();
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+ }
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}
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static struct platform_device ath79_wdt_device = {
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