Merge git://git.denx.de/u-boot-arc

This replaces legacy arch/arc/lib/timer.c implementation and allows us
to describe ARC Timers in Device Tree. Among other things that way we
may properly inherit Timer's clock from CPU's clock s they really run
synchronously.

15 files changed, 190 insertions, 94 deletions

diff --git a/arch/Kconfig b/arch/Kconfig
index 76c690f..308c6ea 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -13,6 +13,9 @@ config ARC
 	select HAVE_PRIVATE_LIBGCC
 	select SUPPORT_OF_CONTROL
 	select ARCH_EARLY_INIT_R
+	select CLK
+	select TIMER
+	select ARC_TIMER
 
 config ARM
 	bool "ARM architecture"
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 4c5696b..6e4b1d0 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -118,7 +118,7 @@ config SYS_DCACHE_OFF
 
 choice
 	prompt "Target select"
-	default TARGET_AXS10X
+	default TARGET_AXS103
 
 config TARGET_TB100
 	bool "Support tb100"
@@ -126,8 +126,11 @@ config TARGET_TB100
 config TARGET_NSIM
 	bool "Support standalone nSIM & Free nSIM"
 
-config TARGET_AXS10X
-	bool "Support Synopsys Designware SDP board (AXS101 & AXS103)"
+config TARGET_AXS101
+	bool "Support Synopsys Designware SDP board AXS101"
+
+config TARGET_AXS103
+	bool "Support Synopsys Designware SDP board AXS103"
 
 endchoice
 
diff --git a/arch/arc/dts/Makefile b/arch/arc/dts/Makefile
index 1d94c08..218a647 100644
--- a/arch/arc/dts/Makefile
+++ b/arch/arc/dts/Makefile
@@ -2,7 +2,8 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-dtb-$(CONFIG_TARGET_AXS10X) +=  axs10x.dtb
+dtb-$(CONFIG_TARGET_AXS101) +=  axs101.dtb
+dtb-$(CONFIG_TARGET_AXS103) +=  axs103.dtb
 dtb-$(CONFIG_TARGET_NSIM) +=  nsim.dtb
 dtb-$(CONFIG_TARGET_TB100) +=  abilis_tb100.dtb
 
diff --git a/arch/arc/dts/abilis_tb100.dts b/arch/arc/dts/abilis_tb100.dts
index cf395c4..23329ec 100644
--- a/arch/arc/dts/abilis_tb100.dts
+++ b/arch/arc/dts/abilis_tb100.dts
@@ -8,13 +8,19 @@
 #include "skeleton.dtsi"
 
 / {
-	#address-cells = <1>;
-	#size-cells = <1>;
-
 	aliases {
 		console = &uart0;
 	};
 
+	cpu_card {
+		core_clk: core_clk {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <500000000>;
+			u-boot,dm-pre-reloc;
+		};
+	};
+
 	uart0: serial@ff100000 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0xff100000 0x1000>;
diff --git a/arch/arc/dts/axc001.dtsi b/arch/arc/dts/axc001.dtsi
new file mode 100644
index 0000000..1cf630d
--- /dev/null
+++ b/arch/arc/dts/axc001.dtsi
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2017 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+	cpu_card {
+		core_clk: core_clk {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <750000000>;
+			u-boot,dm-pre-reloc;
+		};
+	};
+};
+
diff --git a/arch/arc/dts/axc003.dtsi b/arch/arc/dts/axc003.dtsi
new file mode 100644
index 0000000..5e9270a
--- /dev/null
+++ b/arch/arc/dts/axc003.dtsi
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2017 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+	cpu_card {
+		core_clk: core_clk {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <100000000>;
+			u-boot,dm-pre-reloc;
+		};
+	};
+};
+
diff --git a/arch/arc/dts/axs101.dts b/arch/arc/dts/axs101.dts
new file mode 100644
index 0000000..ec7b8b7
--- /dev/null
+++ b/arch/arc/dts/axs101.dts
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2017 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+/dts-v1/;
+
+/include/ "axc001.dtsi"
+/include/ "axs10x_mb.dtsi"
+
+
+/ {
+	chosen {
+		stdout-path = &uart0;
+	};
+};
+
diff --git a/arch/arc/dts/axs103.dts b/arch/arc/dts/axs103.dts
new file mode 100644
index 0000000..8f7a76f
--- /dev/null
+++ b/arch/arc/dts/axs103.dts
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2017 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+/dts-v1/;
+
+/include/ "axc003.dtsi"
+/include/ "axs10x_mb.dtsi"
+
+
+/ {
+	chosen {
+		stdout-path = &uart0;
+	};
+};
+
diff --git a/arch/arc/dts/axs10x.dts b/arch/arc/dts/axs10x.dts
deleted file mode 100644
index 391d067..0000000
--- a/arch/arc/dts/axs10x.dts
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2015 Synopsys, Inc. All rights reserved.
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-/dts-v1/;
-
-#include "skeleton.dtsi"
-
-/ {
-	#address-cells = <1>;
-	#size-cells = <1>;
-
-	aliases {
-		console = &uart0;
-	};
-
-	clocks {
-		apbclk: apbclk {
-			compatible = "fixed-clock";
-			clock-frequency = <50000000>;
-			#clock-cells = <0>;
-		};
-	};
-
-	uart0: serial0@e0022000 {
-		compatible = "snps,dw-apb-uart";
-		reg = <0xe0022000 0x1000>;
-		reg-shift = <2>;
-		reg-io-width = <4>;
-	};
-
-	ethernet@e0018000 {
-		#interrupt-cells = <1>;
-		compatible = "altr,socfpga-stmmac";
-		reg = < 0xe0018000 0x2000 >;
-		interrupts = < 25 >;
-		interrupt-names = "macirq";
-		phy-mode = "gmii";
-		snps,pbl = < 32 >;
-		clocks = <&apbclk>;
-		clock-names = "stmmaceth";
-		max-speed = <100>;
-	};
-
-	ehci@0xe0040000 {
-		compatible = "generic-ehci";
-		reg = < 0xe0040000 0x100 >;
-		interrupts = < 8 >;
-	};
-
-	ohci@0xe0060000 {
-		compatible = "generic-ohci";
-		reg = < 0xe0060000 0x100 >;
-		interrupts = < 8 >;
-	};
-};
diff --git a/arch/arc/dts/axs10x_mb.dtsi b/arch/arc/dts/axs10x_mb.dtsi
new file mode 100644
index 0000000..b74d3c8
--- /dev/null
+++ b/arch/arc/dts/axs10x_mb.dtsi
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2017 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/ {
+	axs10x_mb@e0000000 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x00000000 0xe0000000 0x10000000>;
+		u-boot,dm-pre-reloc;
+
+		clocks {
+			compatible = "simple-bus";
+			u-boot,dm-pre-reloc;
+
+			apbclk: apbclk {
+				compatible = "fixed-clock";
+				clock-frequency = <50000000>;
+				#clock-cells = <0>;
+			};
+
+			uartclk: uartclk {
+				compatible = "fixed-clock";
+				clock-frequency = <33333333>;
+				#clock-cells = <0>;
+				u-boot,dm-pre-reloc;
+			};
+		};
+
+		ethernet@18000 {
+			#interrupt-cells = <1>;
+			compatible = "altr,socfpga-stmmac";
+			reg = < 0x18000 0x2000 >;
+			interrupts = < 25 >;
+			interrupt-names = "macirq";
+			phy-mode = "gmii";
+			snps,pbl = < 32 >;
+			clocks = <&apbclk>;
+			clock-names = "stmmaceth";
+			max-speed = <100>;
+		};
+
+		ehci@0x40000 {
+			compatible = "generic-ehci";
+			reg = < 0x40000 0x100 >;
+			interrupts = < 8 >;
+		};
+
+		ohci@0x60000 {
+			compatible = "generic-ohci";
+			reg = < 0x60000 0x100 >;
+			interrupts = < 8 >;
+		};
+
+		uart0: serial0@22000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x22000 0x100>;
+			clocks = <&uartclk>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+		};
+	};
+};
diff --git a/arch/arc/dts/nsim.dts b/arch/arc/dts/nsim.dts
index 69e16c2..491c46d 100644
--- a/arch/arc/dts/nsim.dts
+++ b/arch/arc/dts/nsim.dts
@@ -8,17 +8,23 @@
 #include "skeleton.dtsi"
 
 / {
-	#address-cells = <1>;
-	#size-cells = <1>;
-
 	aliases {
 		console = &arcuart0;
 	};
 
+	cpu_card {
+		core_clk: core_clk {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <70000000>;
+			u-boot,dm-pre-reloc;
+		};
+	};
+
 	arcuart0: serial@0xc0fc1000 {
 		compatible = "snps,arc-uart";
 		reg = <0xc0fc1000 0x100>;
-		clock-frequency = <80000000>;
+		clock-frequency = <70000000>;
 	};
 
 };
diff --git a/arch/arc/dts/skeleton.dtsi b/arch/arc/dts/skeleton.dtsi
index b41d241..279fc6c 100644
--- a/arch/arc/dts/skeleton.dtsi
+++ b/arch/arc/dts/skeleton.dtsi
@@ -9,5 +9,22 @@
 	#size-cells = <1>;
 	chosen { };
 	aliases { };
-	memory { device_type = "memory"; reg = <0 0>; };
+
+	cpu_card {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		u-boot,dm-pre-reloc;
+
+		timer@0 {
+			compatible = "snps,arc-timer";
+			clocks = <&core_clk>;
+			reg = <0 1>;
+		};
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x10000000>; /* 256M */
+	};
 };
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
index cf999b0..54a9b00 100644
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -33,6 +33,10 @@
 #define ARC_AUX_TIMER0_CTRL	0x22	/* Timer 0 control */
 #define ARC_AUX_TIMER0_LIMIT	0x23	/* Timer 0 limit */
 
+#define ARC_AUX_TIMER1_CNT	0x100	/* Timer 1 count */
+#define ARC_AUX_TIMER1_CTRL	0x101	/* Timer 1 control */
+#define ARC_AUX_TIMER1_LIMIT	0x102	/* Timer 1 limit */
+
 #define ARC_AUX_INTR_VEC_BASE	0x25
 
 /* Data cache related auxiliary registers */
diff --git a/arch/arc/lib/Makefile b/arch/arc/lib/Makefile
index eb62b3c..12097bf 100644
--- a/arch/arc/lib/Makefile
+++ b/arch/arc/lib/Makefile
@@ -18,7 +18,6 @@ obj-y += memcmp.o
 obj-y += memcpy-700.o
 obj-y += memset.o
 obj-y += reset.o
-obj-y += timer.o
 obj-y += ints_low.o
 obj-y += init_helpers.o
 
diff --git a/arch/arc/lib/timer.c b/arch/arc/lib/timer.c
deleted file mode 100644
index a0acbbc..0000000
--- a/arch/arc/lib/timer.c
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <asm/arcregs.h>
-
-#define NH_MODE	(1 << 1)	/* Disable timer if CPU is halted */
-
-int timer_init(void)
-{
-	write_aux_reg(ARC_AUX_TIMER0_CTRL, NH_MODE);
-	/* Set max value for counter/timer */
-	write_aux_reg(ARC_AUX_TIMER0_LIMIT, 0xffffffff);
-	/* Set initial count value and restart counter/timer */
-	write_aux_reg(ARC_AUX_TIMER0_CNT, 0);
-	return 0;
-}
-
-unsigned long timer_read_counter(void)
-{
-	return read_aux_reg(ARC_AUX_TIMER0_CNT);
-}