[PATCH v2 1/5] ARM: rcm-k1879xb1: Add support for K1879XB1 SoC
From: Andrew Andrianov
Date: Tue Jun 30 2015 - 11:16:39 EST
This patch adds basic support for RC Module's
K1879XB1YA SoC.
K1879XB1YA is a hybrid SoC with one ARM1176JZF-S
core running linux and one NeuroMatrix DSP core.
http://www.module.ru/en/catalog/micro/mikroshema_dekodera_cifrovogo_televizionnogo_signala_sbis_k1879hb1ya/
http://www.module.ru/en/catalog/micro/micro_pc/
Signed-off-by: Andrew Andrianov <andrew@xxxxxxxxxx>
---
arch/arm/Kconfig | 2 +
arch/arm/Kconfig.debug | 3 +-
arch/arm/Makefile | 1 +
arch/arm/mach-rcm-k1879xb1/Kconfig | 10 +++
arch/arm/mach-rcm-k1879xb1/Makefile | 2 +
arch/arm/mach-rcm-k1879xb1/board-dt.c | 146 ++++++++++++++++++++++++++++++++++
arch/arm/mach-rcm-k1879xb1/hardware.h | 48 +++++++++++
7 files changed, 211 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/mach-rcm-k1879xb1/Kconfig
create mode 100644 arch/arm/mach-rcm-k1879xb1/Makefile
create mode 100644 arch/arm/mach-rcm-k1879xb1/board-dt.c
create mode 100644 arch/arm/mach-rcm-k1879xb1/hardware.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 45df48b..ca38bcf 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -906,6 +906,8 @@ source "arch/arm/mach-mmp/Kconfig"
source "arch/arm/mach-qcom/Kconfig"
+source "arch/arm/mach-rcm-k1879xb1/Kconfig"
+
source "arch/arm/mach-realview/Kconfig"
source "arch/arm/mach-rockchip/Kconfig"
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 0c12ffb..efcb7fc 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1318,7 +1318,8 @@ config DEBUG_UART_8250
(FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
ARCH_IOP33X || ARCH_IXP4XX || \
- ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
+ ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC || \
+ ARCH_RCM_K1879XB1
# Compatibility options for BCM63xx
config DEBUG_UART_BCM63XX
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 985227c..f3352ee 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -185,6 +185,7 @@ machine-$(CONFIG_ARCH_ORION5X) += orion5x
machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell
machine-$(CONFIG_ARCH_PXA) += pxa
machine-$(CONFIG_ARCH_QCOM) += qcom
+machine-$(CONFIG_ARCH_RCM_K1879XB1) += rcm-k1879xb1
machine-$(CONFIG_ARCH_REALVIEW) += realview
machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
machine-$(CONFIG_ARCH_RPC) += rpc
diff --git a/arch/arm/mach-rcm-k1879xb1/Kconfig b/arch/arm/mach-rcm-k1879xb1/Kconfig
new file mode 100644
index 0000000..3defee0
--- /dev/null
+++ b/arch/arm/mach-rcm-k1879xb1/Kconfig
@@ -0,0 +1,10 @@
+menuconfig ARCH_RCM_K1879XB1
+ bool "RC Module K1879XB1YA"
+ depends on MMU
+ depends on ARCH_MULTI_V6
+ select CPU_V6
+ select ARM_TIMER_SP804
+ select ARM_VIC
+ select ARM_AMBA
+ help
+ Support for RC Module's K1879X SoCs
diff --git a/arch/arm/mach-rcm-k1879xb1/Makefile b/arch/arm/mach-rcm-k1879xb1/Makefile
new file mode 100644
index 0000000..c28fc14
--- /dev/null
+++ b/arch/arm/mach-rcm-k1879xb1/Makefile
@@ -0,0 +1,2 @@
+obj-y += board-dt.o
+
diff --git a/arch/arm/mach-rcm-k1879xb1/board-dt.c b/arch/arm/mach-rcm-k1879xb1/board-dt.c
new file mode 100644
index 0000000..48d3835
--- /dev/null
+++ b/arch/arm/mach-rcm-k1879xb1/board-dt.c
@@ -0,0 +1,145 @@
+/*
+ * arch/arm/mach-rcm-k1879/board-dt.c
+ *
+ * Copyright (C) 2011-2015 RC Module
+ *
+ * Sergey Mironov <ierton@xxxxxxxxx>
+ * Andrew Andrianov <andrew@xxxxxxxxxx>
+ *
+ * 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.
+ */
+
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <asm/mach/map.h>
+#include <asm/mach/arch.h>
+#include "hardware.h"
+
+static void __iomem *k1879_mif;
+static void __iomem *k1879_wdt;
+
+static void __iomem *k1879_mif_base(void)
+{
+ BUG_ON(!k1879_mif);
+ return k1879_mif;
+}
+
+static void __iomem *k1879_sctl_base(void)
+{
+ return (void __iomem *)RCM_K1879_SCTL_VIRT_BASE;
+}
+
+static void k1879_level_irq_i2c0_fixup(unsigned int irq, struct irq_desc *desc)
+{
+ writel(1, k1879_mif_base() + RCM_K1879_MIF_I2C_INT_STAT);
+ handle_level_irq(irq, desc);
+}
+
+static void k1879_level_irq_i2c1_fixup(unsigned int irq, struct irq_desc *desc)
+{
+ writel(1 << 0, k1879_sctl_base() + RCM_K1879_SCTL_INT_P_OUT);
+ handle_level_irq(irq, desc);
+}
+
+static void k1879_level_irq_i2c2_fixup(unsigned int irq, struct irq_desc *desc)
+{
+ writel(1 << 1, k1879_sctl_base() + RCM_K1879_SCTL_INT_P_OUT);
+ handle_level_irq(irq, desc);
+}
+
+static void k1879_level_irq_i2c3_fixup(unsigned int irq, struct irq_desc *desc)
+{
+ writel(1 << 2, k1879_sctl_base() + RCM_K1879_SCTL_INT_P_OUT);
+ handle_level_irq(irq, desc);
+}
+
+static void (*k1879_i2c_fixups[])(unsigned int irq, struct irq_desc *desc) = {
+ k1879_level_irq_i2c0_fixup,
+ k1879_level_irq_i2c1_fixup,
+ k1879_level_irq_i2c2_fixup,
+ k1879_level_irq_i2c3_fixup
+};
+
+static void __init setup_i2c_fixups(void)
+{
+ struct device_node *np;
+ int irq;
+ u32 fixup_id = -1;
+
+ for_each_compatible_node(np, NULL, "rcm,i2c-ocores") {
+ int ret = of_property_read_u32(np, "rcm-irq-fixup-id",
+ &fixup_id);
+
+ if (ret) {
+ pr_warn("k1879xb1: rcm-irq-fixup-id invalid: %d\n",
+ ret);
+ continue;
+ }
+ if (fixup_id >= ARRAY_SIZE(k1879_i2c_fixups)) {
+ pr_warn("k1879xb1: rcm-irq-fixup-id %d too big\n",
+ fixup_id);
+ continue;
+ }
+ irq = of_irq_get(np, 0);
+ irq_set_handler(irq, k1879_i2c_fixups[fixup_id]);
+ }
+}
+
+static void __init k1879_dt_mach_init(void)
+{
+ struct device_node *np;
+
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+ k1879_mif = ioremap(RCM_K1879_MIF_PHYS_BASE,
+ RCM_K1879_MIF_SIZE);
+ BUG_ON(!k1879_mif);
+
+ np = of_find_compatible_node(NULL, NULL, "arm,sp805");
+ WARN_ON(!np);
+ if (np)
+ k1879_wdt = of_iomap(np, 0);
+
+ /* Setup i2c interrupt fixups */
+ setup_i2c_fixups();
+
+ /* I2C0 (Internal, HDMI) needs some extra love */
+ do {
+ void __iomem *mif;
+
+ mif = k1879_mif_base();
+ writel(1, mif + RCM_K1879_MIF_I2C_INT_TYPE_ENA);
+ writel(1, mif + RCM_K1879_MIF_I2C_INT_TYPE);
+ writel(1, mif + RCM_K1879_MIF_I2C_INT_ENA);
+ } while (0);
+}
+
+static void k1879_restart(enum reboot_mode mode, const char *cmd)
+{
+ /* The recommended way to do a soft-reboot on this platform
+ is write directly to watchdog registers and cause an immediate
+ watchdog restart
+ */
+
+ if (!k1879_wdt) {
+ pr_err("k1879xb1: WDT regs were not properly mapped - reboot manually\n");
+ return;
+ }
+ iowrite32(1, (k1879_wdt + 0xf00));
+ iowrite32(1, (k1879_wdt + 0xf04));
+ /* Goodbye! */
+}
+
+static const char * const k1879_dt_match[] = {
+ "rcm,mb7707",
+ "rcm,k1879xb1ya",
+ NULL
+};
+
+DT_MACHINE_START(K1879, "RC Module K1879XB1YA (Device Tree)")
+ .init_machine = k1879_dt_mach_init,
+ .dt_compat = k1879_dt_match,
+ .restart = k1879_restart
+MACHINE_END
diff --git a/arch/arm/mach-rcm-k1879xb1/hardware.h b/arch/arm/mach-rcm-k1879xb1/hardware.h
new file mode 100644
index 0000000..2977ed7
--- /dev/null
+++ b/arch/arm/mach-rcm-k1879xb1/hardware.h
@@ -0,0 +1,48 @@
+/*
+ * arch/arm/mach-rcm-k1879/board-dt.c
+ *
+ * Copyright (C) 2011-2015 RC Module
+ *
+ * Sergey Mironov <ierton@xxxxxxxxx>
+ * Andrew Andrianov <andrew@xxxxxxxxxx>
+ *
+ * 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.
+ */
+#ifndef HARDWARE_H
+#define HARDWARE_H
+
+/*
+ * This is the bare minimum required for arch code only.
+ * The rest comes from DeviceTree
+ */
+
+#define RCM_K1879_PHYS(bus, off) (RCM_K1879_##bus##_PHYS_BASE + (off))
+#define RCM_K1879_VIRT(bus, off) (RCM_K1879_##bus##_VIRT_BASE + (off))
+
+/* Areas of system memory space */
+#define RCM_K1879_AREA0_PHYS_BASE 0x20000000
+#define RCM_K1879_AREA0_SIZE SZ_512K
+#define RCM_K1879_AREA0_VIRT_BASE 0xf8000000
+
+#define RCM_K1879_AREA1_PHYS_BASE 0x80000000
+#define RCM_K1879_AREA1_SIZE SZ_2M
+#define RCM_K1879_AREA1_VIRT_BASE 0xf8100000
+
+#define RCM_K1879_SCTL_OFF 0x0003c000
+#define RCM_K1879_SCTL_PHYS_BASE RCM_K1879_PHYS(AREA0, RCM_K1879_SCTL_OFF)
+#define RCM_K1879_SCTL_VIRT_BASE RCM_K1879_VIRT(AREA0, RCM_K1879_SCTL_OFF)
+#define RCM_K1879_SCTL_SIZE 0x1000
+
+#define RCM_K1879_MIF_OFF 0x00172000
+#define RCM_K1879_MIF_PHYS_BASE RCM_K1879_PHYS(AREA1, RCM_K1879_MIF_OFF)
+#define RCM_K1879_MIF_SIZE 0x100
+
+#define RCM_K1879_MIF_I2C_INT_TYPE_ENA 0x94
+#define RCM_K1879_MIF_I2C_INT_TYPE 0x98
+#define RCM_K1879_MIF_I2C_INT_ENA 0x9C
+#define RCM_K1879_MIF_I2C_INT_STAT 0xA0
+#define RCM_K1879_SCTL_INT_P_OUT 0x08
+
+#endif
--
2.1.4
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