summaryrefslogtreecommitdiff
path: root/arch/arm/mach-spear6xx/spear6xx.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-spear6xx/spear6xx.c')
-rw-r--r--arch/arm/mach-spear6xx/spear6xx.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/arch/arm/mach-spear6xx/spear6xx.c b/arch/arm/mach-spear6xx/spear6xx.c
new file mode 100644
index 00000000..2ed8b14c
--- /dev/null
+++ b/arch/arm/mach-spear6xx/spear6xx.c
@@ -0,0 +1,123 @@
+/*
+ * arch/arm/mach-spear6xx/spear6xx.c
+ *
+ * SPEAr6XX machines common source file
+ *
+ * Copyright (C) 2009 ST Microelectronics
+ * Rajeev Kumar<rajeev-dlh.kumar@st.com>
+ *
+ * Copyright 2012 Stefan Roese <sr@denx.de>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <asm/hardware/vic.h>
+#include <asm/mach/arch.h>
+#include <mach/generic.h>
+#include <mach/hardware.h>
+
+/* Following will create static virtual/physical mappings */
+static struct map_desc spear6xx_io_desc[] __initdata = {
+ {
+ .virtual = VA_SPEAR6XX_ICM1_UART0_BASE,
+ .pfn = __phys_to_pfn(SPEAR6XX_ICM1_UART0_BASE),
+ .length = SZ_4K,
+ .type = MT_DEVICE
+ }, {
+ .virtual = VA_SPEAR6XX_CPU_VIC_PRI_BASE,
+ .pfn = __phys_to_pfn(SPEAR6XX_CPU_VIC_PRI_BASE),
+ .length = SZ_4K,
+ .type = MT_DEVICE
+ }, {
+ .virtual = VA_SPEAR6XX_CPU_VIC_SEC_BASE,
+ .pfn = __phys_to_pfn(SPEAR6XX_CPU_VIC_SEC_BASE),
+ .length = SZ_4K,
+ .type = MT_DEVICE
+ }, {
+ .virtual = VA_SPEAR6XX_ICM3_SYS_CTRL_BASE,
+ .pfn = __phys_to_pfn(SPEAR6XX_ICM3_SYS_CTRL_BASE),
+ .length = SZ_4K,
+ .type = MT_DEVICE
+ }, {
+ .virtual = VA_SPEAR6XX_ICM3_MISC_REG_BASE,
+ .pfn = __phys_to_pfn(SPEAR6XX_ICM3_MISC_REG_BASE),
+ .length = SZ_4K,
+ .type = MT_DEVICE
+ },
+};
+
+/* This will create static memory mapping for selected devices */
+void __init spear6xx_map_io(void)
+{
+ iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
+
+ /* This will initialize clock framework */
+ spear6xx_clk_init();
+}
+
+static void __init spear6xx_timer_init(void)
+{
+ char pclk_name[] = "pll3_48m_clk";
+ struct clk *gpt_clk, *pclk;
+
+ /* get the system timer clock */
+ gpt_clk = clk_get_sys("gpt0", NULL);
+ if (IS_ERR(gpt_clk)) {
+ pr_err("%s:couldn't get clk for gpt\n", __func__);
+ BUG();
+ }
+
+ /* get the suitable parent clock for timer*/
+ pclk = clk_get(NULL, pclk_name);
+ if (IS_ERR(pclk)) {
+ pr_err("%s:couldn't get %s as parent for gpt\n",
+ __func__, pclk_name);
+ BUG();
+ }
+
+ clk_set_parent(gpt_clk, pclk);
+ clk_put(gpt_clk);
+ clk_put(pclk);
+
+ spear_setup_timer();
+}
+
+struct sys_timer spear6xx_timer = {
+ .init = spear6xx_timer_init,
+};
+
+static void __init spear600_dt_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char *spear600_dt_board_compat[] = {
+ "st,spear600",
+ NULL
+};
+
+static const struct of_device_id vic_of_match[] __initconst = {
+ { .compatible = "arm,pl190-vic", .data = vic_of_init, },
+ { /* Sentinel */ }
+};
+
+static void __init spear6xx_dt_init_irq(void)
+{
+ of_irq_init(vic_of_match);
+}
+
+DT_MACHINE_START(SPEAR600_DT, "ST SPEAr600 (Flattened Device Tree)")
+ .map_io = spear6xx_map_io,
+ .init_irq = spear6xx_dt_init_irq,
+ .handle_irq = vic_handle_irq,
+ .timer = &spear6xx_timer,
+ .init_machine = spear600_dt_init,
+ .restart = spear_restart,
+ .dt_compat = spear600_dt_board_compat,
+MACHINE_END