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ARM: shmobile: Initial r8a73a4 SoC support V3
V3 of initial support for the r8a73a4 SoC including: - Single Cortex-A15 CPU Core - GIC - Architecture timer No static virtual mappings are used, all the components make use of ioremap(). DT_MACHINE_START is still wrapped in CONFIG_USE_OF to match other mach-shmobile code. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Magnus Damm
Simon Horman
parent
4c82e45273
commit
eccf0607e4
55
arch/arm/boot/dts/r8a73a4.dtsi
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55
arch/arm/boot/dts/r8a73a4.dtsi
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@ -0,0 +1,55 @@
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/*
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* Device Tree Source for the r8a73a4 SoC
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*
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* Copyright (C) 2013 Renesas Solutions Corp.
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* Copyright (C) 2013 Magnus Damm
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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/include/ "skeleton.dtsi"
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/ {
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compatible = "renesas,r8a73a4";
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interrupt-parent = <&gic>;
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cpus {
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#address-cells = <1>;
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#size-cells = <0>;
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cpu0: cpu@0 {
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device_type = "cpu";
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compatible = "arm,cortex-a15";
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reg = <0>;
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clock-frequency = <1500000000>;
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};
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};
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gic: interrupt-controller@f1001000 {
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compatible = "arm,cortex-a15-gic";
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#interrupt-cells = <3>;
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#address-cells = <0>;
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interrupt-controller;
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reg = <0xf1001000 0x1000>,
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<0xf1002000 0x1000>,
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<0xf1004000 0x2000>,
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<0xf1006000 0x2000>;
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interrupts = <1 9 0xf04>;
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gic-cpuif@4 {
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compatible = "arm,gic-cpuif";
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cpuif-id = <4>;
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cpu = <&cpu0>;
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};
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};
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timer {
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compatible = "arm,armv7-timer";
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interrupts = <1 13 0xf08>,
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<1 14 0xf08>,
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<1 11 0xf08>,
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<1 10 0xf08>;
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};
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};
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@ -18,6 +18,13 @@ config ARCH_SH73A0
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select SH_CLK_CPG
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select RENESAS_INTC_IRQPIN
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config ARCH_R8A73A4
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bool "R-Mobile APE6 (R8A73A40)"
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select ARM_GIC
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select CPU_V7
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select ARM_ARCH_TIMER
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select SH_CLK_CPG
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config ARCH_R8A7740
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bool "R-Mobile A1 (R8A77400)"
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select ARCH_WANT_OPTIONAL_GPIOLIB
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@ -8,6 +8,7 @@ obj-y := timer.o console.o clock.o
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# CPU objects
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obj-$(CONFIG_ARCH_SH7372) += setup-sh7372.o clock-sh7372.o intc-sh7372.o
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obj-$(CONFIG_ARCH_SH73A0) += setup-sh73a0.o clock-sh73a0.o intc-sh73a0.o
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obj-$(CONFIG_ARCH_R8A73A4) += setup-r8a73a4.o clock-r8a73a4.o
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obj-$(CONFIG_ARCH_R8A7740) += setup-r8a7740.o clock-r8a7740.o intc-r8a7740.o
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obj-$(CONFIG_ARCH_R8A7779) += setup-r8a7779.o clock-r8a7779.o intc-r8a7779.o
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obj-$(CONFIG_ARCH_EMEV2) += setup-emev2.o clock-emev2.o
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91
arch/arm/mach-shmobile/clock-r8a73a4.c
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91
arch/arm/mach-shmobile/clock-r8a73a4.c
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@ -0,0 +1,91 @@
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/*
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* r8a73a4 clock framework support
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*
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* Copyright (C) 2013 Renesas Solutions Corp.
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* Copyright (C) 2013 Magnus Damm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/sh_clk.h>
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#include <linux/clkdev.h>
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#include <mach/common.h>
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#define CPG_BASE 0xe6150000
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#define CPG_LEN 0x270
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#define MPCKCR 0xe6150080
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static struct clk_mapping cpg_mapping = {
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.phys = CPG_BASE,
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.len = CPG_LEN,
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};
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static struct clk extalr_clk = {
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.rate = 32768,
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.mapping = &cpg_mapping,
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};
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static struct clk extal1_clk = {
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.rate = 26000000,
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.mapping = &cpg_mapping,
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};
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static struct clk extal2_clk = {
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.rate = 48000000,
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.mapping = &cpg_mapping,
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};
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static struct clk *main_clks[] = {
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&extalr_clk,
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&extal1_clk,
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&extal2_clk,
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};
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enum { MSTP_NR };
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static struct clk mstp_clks[MSTP_NR] = {
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};
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static struct clk_lookup lookups[] = {
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};
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void __init r8a73a4_clock_init(void)
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{
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void __iomem *cpg_base, *reg;
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int k, ret = 0;
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/* fix MPCLK to EXTAL2 for now.
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* this is needed until more detailed clock topology is supported
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*/
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cpg_base = ioremap_nocache(CPG_BASE, CPG_LEN);
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BUG_ON(!cpg_base);
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reg = cpg_base + (MPCKCR - CPG_BASE);
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iowrite32(ioread32(reg) | 1 << 7 | 0x0c, reg); /* set CKSEL */
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iounmap(cpg_base);
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for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
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ret = clk_register(main_clks[k]);
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if (!ret)
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ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
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clkdev_add_table(lookups, ARRAY_SIZE(lookups));
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if (!ret)
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shmobile_clk_init();
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else
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panic("failed to setup r8a73a4 clocks\n");
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}
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7
arch/arm/mach-shmobile/include/mach/r8a73a4.h
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7
arch/arm/mach-shmobile/include/mach/r8a73a4.h
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@ -0,0 +1,7 @@
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#ifndef __ASM_R8A73A4_H__
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#define __ASM_R8A73A4_H__
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void r8a73a4_add_standard_devices(void);
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void r8a73a4_clock_init(void);
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#endif /* __ASM_R8A73A4_H__ */
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50
arch/arm/mach-shmobile/setup-r8a73a4.c
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50
arch/arm/mach-shmobile/setup-r8a73a4.c
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/*
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* r8a73a4 processor support
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*
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* Copyright (C) 2013 Renesas Solutions Corp.
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* Copyright (C) 2013 Magnus Damm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/irq.h>
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#include <linux/irqchip.h>
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#include <linux/kernel.h>
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#include <linux/of_platform.h>
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#include <mach/common.h>
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#include <mach/irqs.h>
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#include <mach/r8a73a4.h>
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#include <asm/mach/arch.h>
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void __init r8a73a4_add_standard_devices(void)
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{
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}
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#ifdef CONFIG_USE_OF
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void __init r8a73a4_add_standard_devices_dt(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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static const char *r8a73a4_boards_compat_dt[] __initdata = {
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"renesas,r8a73a4",
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NULL,
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};
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DT_MACHINE_START(R8A73A4_DT, "Generic R8A73A4 (Flattened Device Tree)")
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.init_irq = irqchip_init,
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.init_machine = r8a73a4_add_standard_devices_dt,
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.init_time = shmobile_timer_init,
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.dt_compat = r8a73a4_boards_compat_dt,
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MACHINE_END
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#endif /* CONFIG_USE_OF */
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