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- From 0b7e0b20da67546344f9fc8e57699adfe61b8953 Mon Sep 17 00:00:00 2001
- From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
- Date: Sat, 15 Aug 2015 20:50:02 +0200
- Subject: [PATCH 025/381] bcm2835: Add support for uart1
- MIME-Version: 1.0
- Content-Type: text/plain; charset=UTF-8
- Content-Transfer-Encoding: 8bit
- This is a hack until a proper solution is agreed upon.
- Martin Sperl is doing some work in this area.
- Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
- ---
- arch/arm/mach-bcm/board_bcm2835.c | 25 +++++++++++++++++++++++++
- 1 file changed, 25 insertions(+)
- --- a/arch/arm/mach-bcm/board_bcm2835.c
- +++ b/arch/arm/mach-bcm/board_bcm2835.c
- @@ -22,6 +22,29 @@
- #include <asm/mach/arch.h>
- #include <asm/mach/map.h>
-
- +/* Use this hack until a proper solution is agreed upon */
- +static void __init bcm2835_init_uart1(void)
- +{
- + struct device_node *np;
- +
- + np = of_find_compatible_node(NULL, NULL, "brcm,bcm2835-aux-uart");
- + if (of_device_is_available(np)) {
- + np = of_find_compatible_node(NULL, NULL,
- + "bcrm,bcm2835-aux-enable");
- + if (np) {
- + void __iomem *base = of_iomap(np, 0);
- +
- + if (!base) {
- + pr_err("bcm2835: Failed enabling Mini UART\n");
- + return;
- + }
- +
- + writel(1, base);
- + pr_info("bcm2835: Mini UART enabled\n");
- + }
- + }
- +}
- +
- static void __init bcm2835_init(void)
- {
- struct device_node *np = of_find_node_by_path("/system");
- @@ -42,6 +65,8 @@ static void __init bcm2835_init(void)
- system_rev = val;
- if (!of_property_read_u64(np, "linux,serial", &val64))
- system_serial_low = val64;
- +
- + bcm2835_init_uart1();
- }
-
- static const char * const bcm2835_compat[] = {
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