Merge tag 'nomadik-dt-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik into next/dt

From Linus Walleij:
Device tree patches for the Nomadik machine:
- Move clock registration to the device tree
- Support probing the MTU timer from the device tree
- Register user LED and user key in the device tree
- Update defconfig to account for user LED and user key
- Move pin control mappings to the device tree

* tag 'nomadik-dt-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik:
  ARM: nomadik: move the pin configuration to DT
  ARM: nomadik: add led and key for S8815
  ARM: nomadik: register clocksource from device tree
  ARM: nomadik: convert all clocks except timer to dt
  clocksource: nomadik-mtu: support of probe

Signed-off-by: Olof Johansson <olof@lixom.net>

2 files changed, 65 insertions, 46 deletions

diff --git a/drivers/clk/clk-nomadik.c b/drivers/clk/clk-nomadik.c
index 6b4c70f7d23..4a1ab27ee87 100644
--- a/drivers/clk/clk-nomadik.c
+++ b/drivers/clk/clk-nomadik.c
@@ -3,46 +3,19 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/clk-provider.h>
+#include <linux/of.h>
 
 /*
  * The Nomadik clock tree is described in the STN8815A12 DB V4.2
  * reference manual for the chip, page 94 ff.
  */
 
+static const __initconst struct of_device_id cpu8815_clk_match[] = {
+	{ .compatible = "fixed-clock", .data = of_fixed_clk_setup, },
+	{ /* sentinel */ }
+};
+
 void __init nomadik_clk_init(void)
 {
-	struct clk *clk;
-
-	clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, 0);
-	clk_register_clkdev(clk, "apb_pclk", NULL);
-	clk_register_clkdev(clk, NULL, "gpio.0");
-	clk_register_clkdev(clk, NULL, "gpio.1");
-	clk_register_clkdev(clk, NULL, "gpio.2");
-	clk_register_clkdev(clk, NULL, "gpio.3");
-	clk_register_clkdev(clk, NULL, "rng");
-	clk_register_clkdev(clk, NULL, "fsmc-nand");
-
-	/*
-	 * The 2.4 MHz TIMCLK reference clock is active at boot time, this is
-	 * actually the MXTALCLK @19.2 MHz divided by 8. This clock is used
-	 * by the timers and watchdog. See page 105 ff.
-	 */
-	clk = clk_register_fixed_rate(NULL, "TIMCLK", NULL, CLK_IS_ROOT,
-				      2400000);
-	clk_register_clkdev(clk, NULL, "mtu0");
-	clk_register_clkdev(clk, NULL, "mtu1");
-
-	/*
-	 * At boot time, PLL2 is set to generate a set of fixed clocks,
-	 * one of them is CLK48, the 48 MHz clock, routed to the UART, MMC/SD
-	 * I2C, IrDA, USB and SSP blocks.
-	 */
-	clk = clk_register_fixed_rate(NULL, "CLK48", NULL, CLK_IS_ROOT,
-				      48000000);
-	clk_register_clkdev(clk, NULL, "uart0");
-	clk_register_clkdev(clk, NULL, "uart1");
-	clk_register_clkdev(clk, NULL, "mmci");
-	clk_register_clkdev(clk, NULL, "ssp");
-	clk_register_clkdev(clk, NULL, "nmk-i2c.0");
-	clk_register_clkdev(clk, NULL, "nmk-i2c.1");
+	of_clk_init(cpu8815_clk_match);
 }
diff --git a/drivers/clocksource/nomadik-mtu.c b/drivers/clocksource/nomadik-mtu.c
index e405531e1cc..7982cb0f25f 100644
--- a/drivers/clocksource/nomadik-mtu.c
+++ b/drivers/clocksource/nomadik-mtu.c
@@ -13,6 +13,9 @@
 #include <linux/io.h>
 #include <linux/clockchips.h>
 #include <linux/clocksource.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
 #include <linux/clk.h>
 #include <linux/jiffies.h>
 #include <linux/delay.h>
@@ -188,22 +191,15 @@ static struct irqaction nmdk_timer_irq = {
 	.dev_id		= &nmdk_clkevt,
 };
 
-void __init nmdk_timer_init(void __iomem *base, int irq)
+static void __init __nmdk_timer_init(void __iomem *base, int irq,
+				     struct clk *pclk, struct clk *clk)
 {
 	unsigned long rate;
-	struct clk *clk0, *pclk0;
 
 	mtu_base = base;
 
-	pclk0 = clk_get_sys("mtu0", "apb_pclk");
-	BUG_ON(IS_ERR(pclk0));
-	BUG_ON(clk_prepare(pclk0) < 0);
-	BUG_ON(clk_enable(pclk0) < 0);
-
-	clk0 = clk_get_sys("mtu0", NULL);
-	BUG_ON(IS_ERR(clk0));
-	BUG_ON(clk_prepare(clk0) < 0);
-	BUG_ON(clk_enable(clk0) < 0);
+	BUG_ON(clk_prepare_enable(pclk));
+	BUG_ON(clk_prepare_enable(clk));
 
 	/*
 	 * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz
@@ -213,7 +209,7 @@ void __init nmdk_timer_init(void __iomem *base, int irq)
 	 * to wake-up at a max 127s a head in time. Dividing a 2.4 MHz timer
 	 * with 16 gives too low timer resolution.
 	 */
-	rate = clk_get_rate(clk0);
+	rate = clk_get_rate(clk);
 	if (rate > 32000000) {
 		rate /= 16;
 		clk_prescale = MTU_CRn_PRESCALE_16;
@@ -247,3 +243,53 @@ void __init nmdk_timer_init(void __iomem *base, int irq)
 	mtu_delay_timer.freq = rate;
 	register_current_timer_delay(&mtu_delay_timer);
 }
+
+void __init nmdk_timer_init(void __iomem *base, int irq)
+{
+	struct clk *clk0, *pclk0;
+
+	pclk0 = clk_get_sys("mtu0", "apb_pclk");
+	BUG_ON(IS_ERR(pclk0));
+	clk0 = clk_get_sys("mtu0", NULL);
+	BUG_ON(IS_ERR(clk0));
+
+	__nmdk_timer_init(base, irq, pclk0, clk0);
+}
+
+static struct of_device_id nmdk_timer_match[] __initconst = {
+	{ .compatible = "st,nomadik-mtu" },
+	{}
+};
+
+static void __init nmdk_timer_of_init(void)
+{
+	struct device_node *node;
+	struct clk *pclk;
+	struct clk *clk;
+	void __iomem *base;
+	int irq;
+
+	node = of_find_matching_node(NULL, nmdk_timer_match);
+	if (!node)
+		panic("No timer node");
+
+	base = of_iomap(node, 0);
+	if (!base)
+		panic("Can't remap registers");
+
+	pclk = of_clk_get_by_name(node, "apb_pclk");
+	if (IS_ERR(pclk))
+		panic("could not get apb_pclk");
+
+	clk = of_clk_get_by_name(node, "timclk");
+	if (IS_ERR(clk))
+		panic("could not get timclk");
+
+	irq = irq_of_parse_and_map(node, 0);
+	if (irq <= 0)
+		panic("Can't parse IRQ");
+
+	__nmdk_timer_init(base, irq, pclk, clk);
+}
+CLOCKSOURCE_OF_DECLARE(nomadik_mtu, "st,nomadik-mtu",
+		       nmdk_timer_of_init);