From mboxrd@z Thu Jan 1 00:00:00 1970 From: horms@verge.net.au (Simon Horman) Date: Fri, 1 Feb 2013 10:47:06 +0900 Subject: [PATCH 2/4] ARM: mach-shmobile: r8a7779: Allow initialisation of GIC by DT In-Reply-To: <20130201003410.GA30007@verge.net.au> References: <1359597051-32700-1-git-send-email-horms+renesas@verge.net.au> <1359597051-32700-3-git-send-email-horms+renesas@verge.net.au> <20130131123213.GB7235@e106331-lin.cambridge.arm.com> <20130201001119.GO10312@verge.net.au> <20130201003410.GA30007@verge.net.au> Message-ID: <20130201014706.GA14046@verge.net.au> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Feb 01, 2013 at 09:34:10AM +0900, Simon Horman wrote: > On Fri, Feb 01, 2013 at 09:11:19AM +0900, Simon Horman wrote: > > On Thu, Jan 31, 2013 at 12:32:13PM +0000, Mark Rutland wrote: > > > Hi Simon, > > > > > > On Thu, Jan 31, 2013 at 01:50:49AM +0000, Simon Horman wrote: > > > > This allows the GIC interrupt controller of the r8a7779 SoC to be > > > > initialised using a flattened device tree blob. > > > > > > > > Signed-off-by: Simon Horman > > > > --- > > > > arch/arm/boot/dts/r8a7779.dtsi | 40 ++++++++++++++++++++++++++ > > > > arch/arm/mach-shmobile/include/mach/common.h | 1 + > > > > arch/arm/mach-shmobile/intc-r8a7779.c | 27 +++++++++++++---- > > > > 3 files changed, 62 insertions(+), 6 deletions(-) > > > > create mode 100644 arch/arm/boot/dts/r8a7779.dtsi > > > > > > > > diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi > > > > new file mode 100644 > > > > index 0000000..eadc12e > > > > --- /dev/null > > > > +++ b/arch/arm/boot/dts/r8a7779.dtsi > > > > @@ -0,0 +1,40 @@ > > > > +/* > > > > + * Device Tree Source for Renesas r8a7740 > > > > + * > > > > + * Copyright (C) 2013 Renesas Solutions Corp. > > > > + * Copyright (C) 2013 Simon Horman > > > > + * > > > > + * This file is licensed under the terms of the GNU General Public License > > > > + * version 2. This program is licensed "as is" without any warranty of any > > > > + * kind, whether express or implied. > > > > + */ > > > > + > > > > +/include/ "skeleton.dtsi" > > > > + > > > > +/ { > > > > + compatible = "renesas,r8a7779"; > > > > + > > > > + cpus { > > > > + cpu at 0 { > > > > + compatible = "arm,cortex-a9"; > > > > + }; > > > > + cpu at 1 { > > > > + compatible = "arm,cortex-a9"; > > > > + }; > > > > + cpu at 2 { > > > > + compatible = "arm,cortex-a9"; > > > > + }; > > > > + cpu at 3 { > > > > + compatible = "arm,cortex-a9"; > > > > + }; > > > > + }; > > > > > > Sorry to sound like a broken record, but it'd be good to see reg and > > > device_type set here. > > > > Sure, will do. > > > > > > + > > > > + gic: interrupt-controller at f0001000 { > > > > + compatible = "arm,cortex-a9-gic"; > > > > + #interrupt-cells = <3>; > > > > + #address-cells = <1>; > > > > > > Why is #address-cells needed here (and without #size-cells)? I see it's in the > > > binding document example, but I can't figure out why. > > > > Its here because I copied the example. > > I will see about removing it from here. > > > > > > + interrupt-controller; > > > > + reg = <0xf0001000 0x1000>, > > > > + <0xf0000100 0x100>; > > > > + }; > > > > +}; > > A revised patch is below. I should also remove "#address-cells = <1>" from > gic in arch/arm/boot/dts/sh73a0.dtsi if it is indeed unnecessary. > > > >From f08f5df1bd6e2133232d06b8cfb847424d6d4cc8 Mon Sep 17 00:00:00 2001 > From: Simon Horman > Date: Tue, 29 Jan 2013 14:21:46 +0900 > Subject: [PATCH] ARM: mach-shmobile: r8a7779: Allow initialisation of GIC by > DT > > This allows the GIC interrupt controller of the r8a7779 SoC to be > initialised using a flattened device tree blob. > > Signed-off-by: Simon Horman > --- > arch/arm/boot/dts/r8a7779.dtsi | 50 ++++++++++++++++++++++++++ > arch/arm/mach-shmobile/include/mach/common.h | 1 + > arch/arm/mach-shmobile/intc-r8a7779.c | 27 ++++++++++---- > 3 files changed, 72 insertions(+), 6 deletions(-) > create mode 100644 arch/arm/boot/dts/r8a7779.dtsi > > v2 > As suggested by Mark Rutland > * Add reg and device_type to cpus > * Remove #address-cells from gic > > diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi > new file mode 100644 > index 0000000..d1fde48 > --- /dev/null > +++ b/arch/arm/boot/dts/r8a7779.dtsi > @@ -0,0 +1,50 @@ > +/* > + * Device Tree Source for Renesas r8a7740 > + * > + * Copyright (C) 2013 Renesas Solutions Corp. > + * Copyright (C) 2013 Simon Horman > + * > + * This file is licensed under the terms of the GNU General Public License > + * version 2. This program is licensed "as is" without any warranty of any > + * kind, whether express or implied. > + */ > + > +/include/ "skeleton.dtsi" > + > +/ { > + compatible = "renesas,r8a7779"; > + > + cpus { > + #address-cells = <1>; > + #size-cells = <0>; > + > + cpu at 0 { > + device_type = "cpu"; > + compatible = "arm,cortex-a9"; > + reg = <0>; > + }; > + cpu at 1 { > + device_type = "cpu"; > + compatible = "arm,cortex-a9"; > + reg = <0>; > + }; > + cpu at 2 { > + device_type = "cpu"; > + compatible = "arm,cortex-a9"; > + reg = <0>; > + }; > + cpu at 3 { > + device_type = "cpu"; > + compatible = "arm,cortex-a9"; > + reg = <0>; > + }; > + }; Sorry, the above reg values are rubbish. I'll fix them and repost. > + > + gic: interrupt-controller at f0001000 { > + compatible = "arm,cortex-a9-gic"; > + #interrupt-cells = <3>; > + interrupt-controller; > + reg = <0xf0001000 0x1000>, > + <0xf0000100 0x100>; > + }; > +}; > diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h > index 16dab18..8ef7ebb 100644 > --- a/arch/arm/mach-shmobile/include/mach/common.h > +++ b/arch/arm/mach-shmobile/include/mach/common.h > @@ -63,6 +63,7 @@ extern void r8a7740_pinmux_init(void); > extern void r8a7740_pm_init(void); > > extern void r8a7779_init_irq(void); > +extern void r8a7779_init_irq_dt(void); > extern void r8a7779_map_io(void); > extern void r8a7779_earlytimer_init(void); > extern void r8a7779_add_early_devices(void); > diff --git a/arch/arm/mach-shmobile/intc-r8a7779.c b/arch/arm/mach-shmobile/intc-r8a7779.c > index 8807c27..f9cc4bc 100644 > --- a/arch/arm/mach-shmobile/intc-r8a7779.c > +++ b/arch/arm/mach-shmobile/intc-r8a7779.c > @@ -24,6 +24,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -43,13 +44,8 @@ static int r8a7779_set_wake(struct irq_data *data, unsigned int on) > return 0; /* always allow wakeup */ > } > > -void __init r8a7779_init_irq(void) > +static void __init r8a7779_init_irq_common(void) > { > - void __iomem *gic_dist_base = IOMEM(0xf0001000); > - void __iomem *gic_cpu_base = IOMEM(0xf0000100); > - > - /* use GIC to handle interrupts */ > - gic_init(0, 29, gic_dist_base, gic_cpu_base); > gic_arch_extn.irq_set_wake = r8a7779_set_wake; > > /* route all interrupts to ARM */ > @@ -63,3 +59,22 @@ void __init r8a7779_init_irq(void) > __raw_writel(0xbffffffc, INT2SMSKCR3); > __raw_writel(0x003fee3f, INT2SMSKCR4); > } > + > +void __init r8a7779_init_irq(void) > +{ > + void __iomem *gic_dist_base = IOMEM(0xf0001000); > + void __iomem *gic_cpu_base = IOMEM(0xf0000100); > + > + /* use GIC to handle interrupts */ > + gic_init(0, 29, gic_dist_base, gic_cpu_base); > + > + r8a7779_init_irq_common(); > +} > + > +#ifdef CONFIG_OF > +void __init r8a7779_init_irq_dt(void) > +{ > + irqchip_init(); > + r8a7779_init_irq_common(); > +} > +#endif > -- > 1.7.10.4 >