Skip to contentSkip to conversation

hsdk: initial port for HSDK board

PATCH New Alexey Brodkin 1 participant 1 message Jun 1, 2017

Subsystems (2)
Device tree bindings Synopsys ARC architecture
lore
Share & tools
lore

Alexey Brodkin

author
#0 lore raw

PATCH 1/1 hsdk: initial port for HSDK board

This initial port adds support of ARC HS Development Kit board with some basic features such serial port, USB, SD/MMC and Ethernet.

Essentially we run Linux kernel on all 4 cores (i.e. utilize SMP) and heavily use IO Coherency for speeding-up DMA-aware peripherals.

Note as opposed to other ARC boards we link Linux kernel to 0x9000_0000 intentionally because cores 1 and 3 configured with DCCM situated at our more usual link base 0x8000_0000.

Signed-off-by Eugeniy Paltsev <paltsev at synopsys.com>
Signed-off-by Alexey Brodkin <abrodkin at synopsys.com>
Cc Vineet Gupta <vgupta at synopsys.com>
Cc Rob Herring <robh+dt at kernel.org>
---
 Documentation/devicetree/bindings/arc/hsdk.txt |   7 ++
 arch/arc/Kconfig                               |   1 +
 arch/arc/Makefile                              |   1 +
 arch/arc/boot/dts/hsdk.dts                     | 151 +++++++++++++++++++++++++
 arch/arc/configs/hsdk_defconfig                |  71 ++++++++++++
 arch/arc/kernel/devtree.c                      |   5 +-
 arch/arc/plat-hsdk/Kconfig                     |  12 ++
 arch/arc/plat-hsdk/Makefile                    |   9 ++
 arch/arc/plat-hsdk/platform.c                  |  59 ++++++++++
 9 files changed, 314 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arc/hsdk.txt
 create mode 100644 arch/arc/boot/dts/hsdk.dts
 create mode 100644 arch/arc/configs/hsdk_defconfig
 create mode 100644 arch/arc/plat-hsdk/Kconfig
 create mode 100644 arch/arc/plat-hsdk/Makefile
 create mode 100644 arch/arc/plat-hsdk/platform.c
Documentation/devicetree/bindings/arc/hsdk.txt new file +7 -0
new file mode 100644
index 000000000000..be50654bbf61
@@ -0,0 +1,7 @@
+Synopsys DesignWare ARC HS Development Kit Device Tree Bindings
+---------------------------------------------------------------------------
+
+ARC HSDK Board with quad-core ARC HS38x4 in silicon.
+
+Required root node properties:
+    - compatible = "snps,hsdk";
arch/arc/Kconfig +1 -0
index a5459698f0ee..92c912819613 100644
@@ -101,6 +101,7 @@ source "arch/arc/plat-tb10x/Kconfig"
 source "arch/arc/plat-axs10x/Kconfig"
 #New platform adds here
 source "arch/arc/plat-eznps/Kconfig"
+source "arch/arc/plat-hsdk/Kconfig"
 
 endmenu
arch/arc/Makefile +1 -0
index 44ef35d33956..55ca925edf65 100644
@@ -111,6 +111,7 @@ core-$(CONFIG_ARC_PLAT_SIM)	+= arch/arc/plat-sim/
 core-$(CONFIG_ARC_PLAT_TB10X)	+= arch/arc/plat-tb10x/
 core-$(CONFIG_ARC_PLAT_AXS10X)	+= arch/arc/plat-axs10x/
 core-$(CONFIG_ARC_PLAT_EZNPS)	+= arch/arc/plat-eznps/
+core-$(CONFIG_ARC_PLAT_HSDK)	+= arch/arc/plat-hsdk/
 
 ifdef CONFIG_ARC_PLAT_EZNPS
 KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include
arch/arc/boot/dts/hsdk.dts new file +151 -0

151 lines not on this page · raw message

arch/arc/configs/hsdk_defconfig new file +71 -0

71 lines not on this page · raw message

arch/arc/kernel/devtree.c +3 -2
index 3b67f538f142..521ef3521a1c 100644
@@ -29,8 +29,9 @@ static void __init arc_set_early_base_baud(unsigned long dt_root)
 {
 	if (of_flat_dt_is_compatible(dt_root, "abilis,arc-tb10x"))
 		arc_base_baud = 166666666;	/* Fixed 166.6MHz clk (TB10x) */
-	else if (of_flat_dt_is_compatible(dt_root, "snps,arc-sdp"))
-		arc_base_baud = 33333333;	/* Fixed 33MHz clk (AXS10x) */
+	else if (of_flat_dt_is_compatible(dt_root, "snps,arc-sdp") ||
+		 of_flat_dt_is_compatible(dt_root, "snps,hsdk"))
+		arc_base_baud = 33333333;	/* Fixed 33MHz clk (AXS10x & HSDK) */
 	else if (of_flat_dt_is_compatible(dt_root, "ezchip,arc-nps"))
 		arc_base_baud = 800000000;      /* Fixed 800MHz clk (NPS) */
 	else
arch/arc/plat-hsdk/Kconfig new file +12 -0
new file mode 100644
index 000000000000..21ec7623d16c
@@ -0,0 +1,12 @@
+#
+# Copyright (C) 2017 Synopsys, Inc. (www.synopsys.com)
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+
+menuconfig ARC_PLAT_HSDK
+	bool "ARC HS Development Kit board"
+	help
+	  Support for ARC HS Development Kit board
arch/arc/plat-hsdk/Makefile new file +9 -0
new file mode 100644
index 000000000000..9a50c511a672
@@ -0,0 +1,9 @@
+#
+# Copyright (C) 2017 Synopsys, Inc. (www.synopsys.com)
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+
+obj-y := platform.o
arch/arc/plat-hsdk/platform.c new file +59 -0

59 lines not on this page · raw message

Signature · 1 line
2.7.5