C6X: add basic support for TMS320C6678 SoC
This patch adds support for the TMS320C6678 SoC on an EVMC6678LE
evaluation board. The 6678 is a C66x family CPU which is very similar
to the already supported C64x CPUs with the addition of floating point
instructions.
Signed-off-by: Ken Cox <jkc@redhat.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
CC: Aurelien Jacquiot <a-jacquiot@ti.com>
CC: linux-c6x-dev@linux-c6x.org
diff --git a/arch/c6x/boot/dts/evmc6678.dts b/arch/c6x/boot/dts/evmc6678.dts
new file mode 100644
index 0000000..ab68630
--- /dev/null
+++ b/arch/c6x/boot/dts/evmc6678.dts
@@ -0,0 +1,83 @@
+/*
+ * arch/c6x/boot/dts/evmc6678.dts
+ *
+ * EVMC6678 Evaluation Platform For TMS320C6678
+ *
+ * Copyright (C) 2012 Texas Instruments Incorporated
+ *
+ * Author: Ken Cox <jkc@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+
+/dts-v1/;
+
+/include/ "tms320c6678.dtsi"
+
+/ {
+ model = "Advantech EVMC6678";
+ compatible = "advantech,evmc6678";
+
+ chosen {
+ bootargs = "root=/dev/nfs ip=dhcp rw";
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x80000000 0x20000000>;
+ };
+
+ soc {
+ megamod_pic: interrupt-controller@1800000 {
+ interrupts = < 12 13 14 15 >;
+ };
+
+ timer8: timer@2280000 {
+ interrupt-parent = <&megamod_pic>;
+ interrupts = < 66 >;
+ };
+
+ timer9: timer@2290000 {
+ interrupt-parent = <&megamod_pic>;
+ interrupts = < 68 >;
+ };
+
+ timer10: timer@22A0000 {
+ interrupt-parent = <&megamod_pic>;
+ interrupts = < 70 >;
+ };
+
+ timer11: timer@22B0000 {
+ interrupt-parent = <&megamod_pic>;
+ interrupts = < 72 >;
+ };
+
+ timer12: timer@22C0000 {
+ interrupt-parent = <&megamod_pic>;
+ interrupts = < 74 >;
+ };
+
+ timer13: timer@22D0000 {
+ interrupt-parent = <&megamod_pic>;
+ interrupts = < 76 >;
+ };
+
+ timer14: timer@22E0000 {
+ interrupt-parent = <&megamod_pic>;
+ interrupts = < 78 >;
+ };
+
+ timer15: timer@22F0000 {
+ interrupt-parent = <&megamod_pic>;
+ interrupts = < 80 >;
+ };
+
+ clock-controller@2310000 {
+ clock-frequency = <100000000>;
+ };
+ };
+};
diff --git a/arch/c6x/boot/dts/tms320c6678.dtsi b/arch/c6x/boot/dts/tms320c6678.dtsi
new file mode 100644
index 0000000..386196e
--- /dev/null
+++ b/arch/c6x/boot/dts/tms320c6678.dtsi
@@ -0,0 +1,146 @@
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ reg = <0>;
+ model = "ti,c66x";
+ };
+ cpu@1 {
+ device_type = "cpu";
+ reg = <1>;
+ model = "ti,c66x";
+ };
+ cpu@2 {
+ device_type = "cpu";
+ reg = <2>;
+ model = "ti,c66x";
+ };
+ cpu@3 {
+ device_type = "cpu";
+ reg = <3>;
+ model = "ti,c66x";
+ };
+ cpu@4 {
+ device_type = "cpu";
+ reg = <4>;
+ model = "ti,c66x";
+ };
+ cpu@5 {
+ device_type = "cpu";
+ reg = <5>;
+ model = "ti,c66x";
+ };
+ cpu@6 {
+ device_type = "cpu";
+ reg = <6>;
+ model = "ti,c66x";
+ };
+ cpu@7 {
+ device_type = "cpu";
+ reg = <7>;
+ model = "ti,c66x";
+ };
+ };
+
+ soc {
+ compatible = "simple-bus";
+ model = "tms320c6678";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ core_pic: interrupt-controller {
+ compatible = "ti,c64x+core-pic";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ megamod_pic: interrupt-controller@1800000 {
+ compatible = "ti,c64x+megamod-pic";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ reg = <0x1800000 0x1000>;
+ interrupt-parent = <&core_pic>;
+ };
+
+ cache-controller@1840000 {
+ compatible = "ti,c64x+cache";
+ reg = <0x01840000 0x8400>;
+ };
+
+ timer8: timer@2280000 {
+ compatible = "ti,c64x+timer64";
+ ti,core-mask = < 0x01 >;
+ reg = <0x2280000 0x40>;
+ };
+
+ timer9: timer@2290000 {
+ compatible = "ti,c64x+timer64";
+ ti,core-mask = < 0x02 >;
+ reg = <0x2290000 0x40>;
+ };
+
+ timer10: timer@22A0000 {
+ compatible = "ti,c64x+timer64";
+ ti,core-mask = < 0x04 >;
+ reg = <0x22A0000 0x40>;
+ };
+
+ timer11: timer@22B0000 {
+ compatible = "ti,c64x+timer64";
+ ti,core-mask = < 0x08 >;
+ reg = <0x22B0000 0x40>;
+ };
+
+ timer12: timer@22C0000 {
+ compatible = "ti,c64x+timer64";
+ ti,core-mask = < 0x10 >;
+ reg = <0x22C0000 0x40>;
+ };
+
+ timer13: timer@22D0000 {
+ compatible = "ti,c64x+timer64";
+ ti,core-mask = < 0x20 >;
+ reg = <0x22D0000 0x40>;
+ };
+
+ timer14: timer@22E0000 {
+ compatible = "ti,c64x+timer64";
+ ti,core-mask = < 0x40 >;
+ reg = <0x22E0000 0x40>;
+ };
+
+ timer15: timer@22F0000 {
+ compatible = "ti,c64x+timer64";
+ ti,core-mask = < 0x80 >;
+ reg = <0x22F0000 0x40>;
+ };
+
+ clock-controller@2310000 {
+ compatible = "ti,c6678-pll", "ti,c64x+pll";
+ reg = <0x02310000 0x200>;
+ ti,c64x+pll-bypass-delay = <200>;
+ ti,c64x+pll-reset-delay = <12000>;
+ ti,c64x+pll-lock-delay = <80000>;
+ };
+
+ device-state-controller@2620000 {
+ compatible = "ti,c64x+dscr";
+ reg = <0x02620000 0x1000>;
+
+ ti,dscr-devstat = <0x20>;
+ ti,dscr-silicon-rev = <0x18 28 0xf>;
+
+ ti,dscr-mac-fuse-regs = <0x110 1 2 3 4
+ 0x114 5 6 0 0>;
+
+ };
+ };
+};
diff --git a/arch/c6x/configs/evmc6678_defconfig b/arch/c6x/configs/evmc6678_defconfig
new file mode 100644
index 0000000..5f126d4
--- /dev/null
+++ b/arch/c6x/configs/evmc6678_defconfig
@@ -0,0 +1,42 @@
+CONFIG_SOC_TMS320C6678=y
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SYSVIPC=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_NAMESPACES=y
+# CONFIG_UTS_NS is not set
+# CONFIG_USER_NS is not set
+# CONFIG_PID_NS is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_EXPERT=y
+# CONFIG_FUTEX is not set
+# CONFIG_SLUB_DEBUG is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_FORCE_LOAD=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE=""
+# CONFIG_CMDLINE_FORCE is not set
+CONFIG_BOARD_EVM6678=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=2
+CONFIG_BLK_DEV_RAM_SIZE=17000
+CONFIG_MISC_DEVICES=y
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_IOMMU_SUPPORT is not set
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_CRC16=y
+# CONFIG_ENABLE_MUST_CHECK is not set
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_DEBUG_BUGVERBOSE is not set
diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c
index ce46186..f4e72bd 100644
--- a/arch/c6x/kernel/setup.c
+++ b/arch/c6x/kernel/setup.c
@@ -143,6 +143,10 @@
p->cpu_name = "C64x+";
p->cpu_voltage = "1.2";
break;
+ case 21:
+ p->cpu_name = "C66X";
+ p->cpu_voltage = "1.2";
+ break;
default:
p->cpu_name = "unknown";
break;
diff --git a/arch/c6x/platforms/Kconfig b/arch/c6x/platforms/Kconfig
index 401ee67..c4a0fad 100644
--- a/arch/c6x/platforms/Kconfig
+++ b/arch/c6x/platforms/Kconfig
@@ -14,3 +14,7 @@
config SOC_TMS320C6474
bool "TMS320C6474"
default n
+
+config SOC_TMS320C6678
+ bool "TMS320C6678"
+ default n
diff --git a/arch/c6x/platforms/plldata.c b/arch/c6x/platforms/plldata.c
index 2cfd6f4..755359e 100644
--- a/arch/c6x/platforms/plldata.c
+++ b/arch/c6x/platforms/plldata.c
@@ -335,6 +335,68 @@
}
#endif /* CONFIG_SOC_TMS320C6474 */
+#ifdef CONFIG_SOC_TMS320C6678
+static struct clk_lookup c6678_clks[] = {
+ CLK(NULL, "pll1", &c6x_soc_pll1.sysclks[0]),
+ CLK(NULL, "pll1_refclk", &c6x_soc_pll1.sysclks[1]),
+ CLK(NULL, "pll1_sysclk2", &c6x_soc_pll1.sysclks[2]),
+ CLK(NULL, "pll1_sysclk3", &c6x_soc_pll1.sysclks[3]),
+ CLK(NULL, "pll1_sysclk4", &c6x_soc_pll1.sysclks[4]),
+ CLK(NULL, "pll1_sysclk5", &c6x_soc_pll1.sysclks[5]),
+ CLK(NULL, "pll1_sysclk6", &c6x_soc_pll1.sysclks[6]),
+ CLK(NULL, "pll1_sysclk7", &c6x_soc_pll1.sysclks[7]),
+ CLK(NULL, "pll1_sysclk8", &c6x_soc_pll1.sysclks[8]),
+ CLK(NULL, "pll1_sysclk9", &c6x_soc_pll1.sysclks[9]),
+ CLK(NULL, "pll1_sysclk10", &c6x_soc_pll1.sysclks[10]),
+ CLK(NULL, "pll1_sysclk11", &c6x_soc_pll1.sysclks[11]),
+ CLK(NULL, "core", &c6x_core_clk),
+ CLK("", NULL, NULL)
+};
+
+static void __init c6678_setup_clocks(struct device_node *node)
+{
+ struct pll_data *pll = &c6x_soc_pll1;
+ struct clk *sysclks = pll->sysclks;
+
+ pll->flags = PLL_HAS_MUL;
+
+ sysclks[1].flags |= FIXED_DIV_PLL;
+ sysclks[1].div = 1;
+
+ sysclks[2].div = PLLDIV2;
+
+ sysclks[3].flags |= FIXED_DIV_PLL;
+ sysclks[3].div = 2;
+
+ sysclks[4].flags |= FIXED_DIV_PLL;
+ sysclks[4].div = 3;
+
+ sysclks[5].div = PLLDIV5;
+
+ sysclks[6].flags |= FIXED_DIV_PLL;
+ sysclks[6].div = 64;
+
+ sysclks[7].flags |= FIXED_DIV_PLL;
+ sysclks[7].div = 6;
+
+ sysclks[8].div = PLLDIV8;
+
+ sysclks[9].flags |= FIXED_DIV_PLL;
+ sysclks[9].div = 12;
+
+ sysclks[10].flags |= FIXED_DIV_PLL;
+ sysclks[10].div = 3;
+
+ sysclks[11].flags |= FIXED_DIV_PLL;
+ sysclks[11].div = 6;
+
+ c6x_core_clk.parent = &sysclks[0];
+ c6x_i2c_clk.parent = &sysclks[7];
+
+ c6x_clks_init(c6678_clks);
+}
+#endif /* CONFIG_SOC_TMS320C6678 */
+
static struct of_device_id c6x_clkc_match[] __initdata = {
#ifdef CONFIG_SOC_TMS320C6455
{ .compatible = "ti,c6455-pll", .data = c6455_setup_clocks },
@@ -348,6 +410,9 @@
#ifdef CONFIG_SOC_TMS320C6474
{ .compatible = "ti,c6474-pll", .data = c6474_setup_clocks },
#endif
+#ifdef CONFIG_SOC_TMS320C6678
+ { .compatible = "ti,c6678-pll", .data = c6678_setup_clocks },
+#endif
{ .compatible = "ti,c64x+pll" },
{}
};