ARM: at91: introduce SAMA5 support
This patch introduces the SAMA5 support and a generic board file for SAMA5
devices. It also updates the PMC driver to manage clock division which is a
requirement since some peripherals can't work at the bus frequency on SAMA5.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/mach-at91/board-dt-sama5.c b/arch/arm/mach-at91/board-dt-sama5.c
new file mode 100644
index 0000000..705305e
--- /dev/null
+++ b/arch/arm/mach-at91/board-dt-sama5.c
@@ -0,0 +1,86 @@
+/*
+ * Setup code for SAMA5 Evaluation Kits with Device Tree support
+ *
+ * Copyright (C) 2013 Atmel,
+ * 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/micrel_phy.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/phy.h>
+
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include "at91_aic.h"
+#include "generic.h"
+
+
+static const struct of_device_id irq_of_match[] __initconst = {
+
+ { .compatible = "atmel,sama5d3-aic", .data = at91_aic5_of_init },
+ { /*sentinel*/ }
+};
+
+static void __init at91_dt_init_irq(void)
+{
+ of_irq_init(irq_of_match);
+}
+
+static int ksz9021rn_phy_fixup(struct phy_device *phy)
+{
+ int value;
+
+#define GMII_RCCPSR 260
+#define GMII_RRDPSR 261
+#define GMII_ERCR 11
+#define GMII_ERDWR 12
+
+ /* Set delay values */
+ value = GMII_RCCPSR | 0x8000;
+ phy_write(phy, GMII_ERCR, value);
+ value = 0xF2F4;
+ phy_write(phy, GMII_ERDWR, value);
+ value = GMII_RRDPSR | 0x8000;
+ phy_write(phy, GMII_ERCR, value);
+ value = 0x2222;
+ phy_write(phy, GMII_ERDWR, value);
+
+ return 0;
+}
+
+static void __init sama5_dt_device_init(void)
+{
+ if (of_machine_is_compatible("atmel,sama5d3xcm"))
+ phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
+ ksz9021rn_phy_fixup);
+
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char *sama5_dt_board_compat[] __initdata = {
+ "atmel,sama5",
+ NULL
+};
+
+DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
+ /* Maintainer: Atmel */
+ .init_time = at91sam926x_pit_init,
+ .map_io = at91_map_io,
+ .handle_irq = at91_aic5_handle_irq,
+ .init_early = at91_dt_initialize,
+ .init_irq = at91_dt_init_irq,
+ .init_machine = sama5_dt_device_init,
+ .dt_compat = sama5_dt_board_compat,
+MACHINE_END