[PATCH 4/4] ARM: at91: introduce SAMA5 support
Joachim Eastwood
manabian at gmail.com
Fri Mar 8 11:40:27 EST 2013
On 8 March 2013 16:13, <ludovic.desroches at atmel.com> wrote:
> From: Ludovic Desroches <ludovic.desroches at atmel.com>
>
> This patch introduces the SAMA5 support. It also updates the PMC driver to
> manage clock division which is a requirement since some peripherals can't work
> at the bus frequency on SAMA5.
>
> Signed-off-by: Ludovic Desroches <ludovic.desroches at atmel.com>
> Signed-off-by: Nicolas Ferre <nicolas.ferre at atmel.com>
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> ---
> arch/arm/boot/dts/Makefile | 5 +
> arch/arm/boot/dts/sama5d3.dtsi | 1031 ++++++++++++++++++++++++++++
> arch/arm/boot/dts/sama5d31ek.dts | 51 ++
> arch/arm/boot/dts/sama5d33ek.dts | 44 ++
> arch/arm/boot/dts/sama5d34ek.dts | 61 ++
> arch/arm/boot/dts/sama5d35ek.dts | 56 ++
> arch/arm/boot/dts/sama5d3xcm.dtsi | 91 +++
> arch/arm/boot/dts/sama5d3xdm.dtsi | 42 ++
> arch/arm/boot/dts/sama5d3xmb.dtsi | 166 +++++
> arch/arm/configs/sama5_defconfig | 181 +++++
> arch/arm/mach-at91/Kconfig | 34 +
> arch/arm/mach-at91/Makefile | 4 +
> arch/arm/mach-at91/board-dt-sama5.c | 86 +++
> arch/arm/mach-at91/clock.c | 109 ++-
> arch/arm/mach-at91/clock.h | 2 +
> arch/arm/mach-at91/include/mach/at91_pmc.h | 18 +-
> arch/arm/mach-at91/include/mach/cpu.h | 20 +
> arch/arm/mach-at91/include/mach/sama5d3.h | 73 ++
> arch/arm/mach-at91/sama5d3.c | 377 ++++++++++
> arch/arm/mach-at91/setup.c | 27 +
> arch/arm/mach-at91/soc.h | 5 +
> 21 files changed, 2454 insertions(+), 29 deletions(-)
> create mode 100644 arch/arm/boot/dts/sama5d3.dtsi
> create mode 100644 arch/arm/boot/dts/sama5d31ek.dts
> create mode 100644 arch/arm/boot/dts/sama5d33ek.dts
> create mode 100644 arch/arm/boot/dts/sama5d34ek.dts
> create mode 100644 arch/arm/boot/dts/sama5d35ek.dts
> create mode 100644 arch/arm/boot/dts/sama5d3xcm.dtsi
> create mode 100644 arch/arm/boot/dts/sama5d3xdm.dtsi
> create mode 100644 arch/arm/boot/dts/sama5d3xmb.dtsi
> create mode 100644 arch/arm/configs/sama5_defconfig
> create mode 100644 arch/arm/mach-at91/board-dt-sama5.c
> create mode 100644 arch/arm/mach-at91/include/mach/sama5d3.h
> create mode 100644 arch/arm/mach-at91/sama5d3.c
<snip>
> --- a/arch/arm/mach-at91/Kconfig
> +++ b/arch/arm/mach-at91/Kconfig
> @@ -29,6 +29,14 @@ config SOC_AT91SAM9
> select MULTI_IRQ_HANDLER
> select SPARSE_IRQ
>
> +config SOC_SAMA5
> + bool
> + select AT91_SAM9_TIME
> + select CPU_V7
> + select GENERIC_CLOCKEVENTS
> + select MULTI_IRQ_HANDLER
> + select SPARSE_IRQ
> +
> menu "Atmel AT91 System-on-Chip"
>
> choice
> @@ -41,10 +49,28 @@ config SOC_SAM_V4_V5
> Select this if you are using one of Atmel's AT91SAM9, AT91RM9200
> or AT91X40 SoC.
>
> +config SOC_SAM_V7
> + bool "Cortex A5"
> + help
> + Select this if you are using one of Atmel's SAMA5D3 SoC.
> +
> endchoice
>
> comment "Atmel AT91 Processor"
>
> +if SOC_SAM_V7
> +config SOC_SAMA5D3
> + bool "SAMA5D3 family"
> + depends on SOC_SAM_V7
> + select SOC_SAMA5
> + select HAVE_FB_ATMEL
> + select HAVE_NET_MACB
Remove HAVE_NET_MACB. It doesn't exist elsewhere in the kernel now.
> + select HAVE_AT91_DBGU1
> + help
> + Select this if you are using one of Atmel's SAMA5D3 family SoC.
> + This support covers SAMA5D31, SAMA5D33, SAMA5D34, SAMA5D35.
> +endif
> +
<snip>
> diff --git a/arch/arm/mach-at91/board-dt-sama5.c b/arch/arm/mach-at91/board-dt-sama5.c
> new file mode 100644
> index 0000000..705305e
> --- /dev/null
> +++ b/arch/arm/mach-at91/board-dt-sama5.c
> @@ -0,0 +1,86 @@
> +/*
> + * Setup code for SAMA5 Evaluation Kits with Device Tree support
> + *
> + * Copyright (C) 2013 Atmel,
> + * 2013 Ludovic Desroches <ludovic.desroches at atmel.com>
> + *
> + * Licensed under GPLv2 or later.
> + */
> +
> +#include <linux/types.h>
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/gpio.h>
> +#include <linux/micrel_phy.h>
> +#include <linux/of.h>
> +#include <linux/of_irq.h>
> +#include <linux/of_platform.h>
> +#include <linux/phy.h>
> +
> +#include <asm/setup.h>
> +#include <asm/irq.h>
> +#include <asm/mach/arch.h>
> +#include <asm/mach/map.h>
> +#include <asm/mach/irq.h>
> +
> +#include "at91_aic.h"
> +#include "generic.h"
> +
> +
> +static const struct of_device_id irq_of_match[] __initconst = {
> +
> + { .compatible = "atmel,sama5d3-aic", .data = at91_aic5_of_init },
> + { /*sentinel*/ }
> +};
> +
> +static void __init at91_dt_init_irq(void)
> +{
> + of_irq_init(irq_of_match);
> +}
> +
> +static int ksz9021rn_phy_fixup(struct phy_device *phy)
> +{
> + int value;
> +
> +#define GMII_RCCPSR 260
> +#define GMII_RRDPSR 261
> +#define GMII_ERCR 11
> +#define GMII_ERDWR 12
> +
> + /* Set delay values */
> + value = GMII_RCCPSR | 0x8000;
> + phy_write(phy, GMII_ERCR, value);
> + value = 0xF2F4;
> + phy_write(phy, GMII_ERDWR, value);
> + value = GMII_RRDPSR | 0x8000;
> + phy_write(phy, GMII_ERCR, value);
> + value = 0x2222;
> + phy_write(phy, GMII_ERDWR, value);
> +
> + return 0;
> +}
> +
> +static void __init sama5_dt_device_init(void)
> +{
> + if (of_machine_is_compatible("atmel,sama5d3xcm"))
> + phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
> + ksz9021rn_phy_fixup);
> +
> + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
> +}
> +
> +static const char *sama5_dt_board_compat[] __initdata = {
> + "atmel,sama5",
> + NULL
> +};
> +
> +DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
> + /* Maintainer: Atmel */
> + .init_time = at91sam926x_pit_init,
> + .map_io = at91_map_io,
> + .handle_irq = at91_aic5_handle_irq,
> + .init_early = at91_dt_initialize,
> + .init_irq = at91_dt_init_irq,
> + .init_machine = sama5_dt_device_init,
> + .dt_compat = sama5_dt_board_compat,
> +MACHINE_END
Do we really need board-dt-sama5.c?
Now that we have both irqchip_init and clocksource_of_init it
shouldn't be necessary with more than one board-dt.c.
regards
Joachim Eastwood
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