[PATCH 2/4] ARM: imx: add initial support for imx7ulp
Stefan Wahren
stefan.wahren at i2se.com
Wed May 17 10:36:42 PDT 2017
Hi Dong,
> Dong Aisheng <aisheng.dong at nxp.com> hat am 17. Mai 2017 um 17:50 geschrieben:
>
>
> Add initial support for imx7ulp.
>
> Note that we need configure power mode to Partial Stop mode 3 with
> system/bus clock enabled first as the default enabled STOP mode will
> gate off system/bus clock when execute WFI in MX7ULP SoC.
>
> And there's still no MXC_CPU_IMX7ULP IDs read from register as ULP has no
> anatop as before. So we encode one with 0xff in reverse order in case new
> ones will be in the future.
>
> Cc: Shawn Guo <shawnguo at kernel.org>
> Signed-off-by: Dong Aisheng <aisheng.dong at nxp.com>
> ---
> arch/arm/mach-imx/Kconfig | 9 +++++++++
> arch/arm/mach-imx/Makefile | 1 +
> arch/arm/mach-imx/common.h | 1 +
> arch/arm/mach-imx/cpu.c | 3 +++
> arch/arm/mach-imx/mach-imx7ulp.c | 37 +++++++++++++++++++++++++++++++++++++
> arch/arm/mach-imx/mxc.h | 1 +
> arch/arm/mach-imx/pm-imx7ulp.c | 33 +++++++++++++++++++++++++++++++++
> 7 files changed, 85 insertions(+)
> create mode 100644 arch/arm/mach-imx/mach-imx7ulp.c
> create mode 100644 arch/arm/mach-imx/pm-imx7ulp.c
>
> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> index 936c59d..a07081d 100644
> --- a/arch/arm/mach-imx/Kconfig
> +++ b/arch/arm/mach-imx/Kconfig
> @@ -553,6 +553,15 @@ comment "Cortex-A/Cortex-M asymmetric multiprocessing platforms"
>
> if ARCH_MULTI_V7 || ARM_SINGLE_ARMV7M
>
> +config SOC_IMX7ULP
> + bool "i.MX7ULP support"
> + select ARM_GIC
> + select CLKSRC_IMX_TPM
> + select HAVE_ARM_ARCH_TIMER
> + select PINCTRL_IMX7ULP
> + help
> + This enables support for Freescale i.MX7 Ultra Low Power processor.
> +
> config SOC_VF610
> bool "Vybrid Family VF610 support"
> select ARM_GIC if ARCH_MULTI_V7
> diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
> index cab1289..c5948b7 100644
> --- a/arch/arm/mach-imx/Makefile
> +++ b/arch/arm/mach-imx/Makefile
> @@ -80,6 +80,7 @@ obj-$(CONFIG_SOC_IMX6SL) += mach-imx6sl.o
> obj-$(CONFIG_SOC_IMX6SX) += mach-imx6sx.o
> obj-$(CONFIG_SOC_IMX6UL) += mach-imx6ul.o
> obj-$(CONFIG_SOC_IMX7D) += mach-imx7d.o
> +obj-$(CONFIG_SOC_IMX7ULP) += mach-imx7ulp.o pm-imx7ulp.o
>
> ifeq ($(CONFIG_SUSPEND),y)
> AFLAGS_suspend-imx6.o :=-Wa,-march=armv7-a
> diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
> index b09a2ec..b0e85df 100644
> --- a/arch/arm/mach-imx/common.h
> +++ b/arch/arm/mach-imx/common.h
> @@ -128,6 +128,7 @@ void imx6dl_pm_init(void);
> void imx6sl_pm_init(void);
> void imx6sx_pm_init(void);
> void imx6ul_pm_init(void);
> +void imx7ulp_pm_init(void);
>
> #ifdef CONFIG_PM
> void imx51_pm_init(void);
> diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c
> index b3347d3..3867e7f 100644
> --- a/arch/arm/mach-imx/cpu.c
> +++ b/arch/arm/mach-imx/cpu.c
> @@ -134,6 +134,9 @@ struct device * __init imx_soc_device_init(void)
> case MXC_CPU_IMX7D:
> soc_id = "i.MX7D";
> break;
> + case MXC_CPU_IMX7ULP:
> + soc_id = "i.MX7ULP";
> + break;
> default:
> soc_id = "Unknown";
> }
> diff --git a/arch/arm/mach-imx/mach-imx7ulp.c b/arch/arm/mach-imx/mach-imx7ulp.c
> new file mode 100644
> index 0000000..9f7a25c
> --- /dev/null
> +++ b/arch/arm/mach-imx/mach-imx7ulp.c
> @@ -0,0 +1,37 @@
> +/*
> + * Copyright (C) 2016 Freescale Semiconductor, Inc.
> + * Copyright (C) 2017 NXP
> + *
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +#include <linux/irqchip.h>
> +#include <linux/of_platform.h>
> +#include <asm/mach/arch.h>
> +
> +#include "common.h"
> +#include "hardware.h"
> +
> +static void __init imx7ulp_init_machine(void)
> +{
> + imx7ulp_pm_init();
> +
> + mxc_set_cpu_type(MXC_CPU_IMX7ULP);
> + imx_print_silicon_rev("i.MX7ULP", IMX_CHIP_REVISION_1_0);
> + of_platform_default_populate(NULL, NULL, imx_soc_device_init());
> +}
> +
> +static const char *const imx7ulp_dt_compat[] __initconst = {
> + "fsl,imx7ulp",
> + NULL,
> +};
> +
> +DT_MACHINE_START(IMX7ulp, "Freescale i.MX7ULP (Device Tree)")
> + .init_machine = imx7ulp_init_machine,
> + .dt_compat = imx7ulp_dt_compat,
> +MACHINE_END
> diff --git a/arch/arm/mach-imx/mxc.h b/arch/arm/mach-imx/mxc.h
> index 34f2ff6..3dfb09c 100644
> --- a/arch/arm/mach-imx/mxc.h
> +++ b/arch/arm/mach-imx/mxc.h
> @@ -40,6 +40,7 @@
> #define MXC_CPU_IMX6Q 0x63
> #define MXC_CPU_IMX6UL 0x64
> #define MXC_CPU_IMX7D 0x72
> +#define MXC_CPU_IMX7ULP 0xff
>
> #define IMX_DDR_TYPE_LPDDR2 1
>
> diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c
> new file mode 100644
> index 0000000..df5d6b6
> --- /dev/null
> +++ b/arch/arm/mach-imx/pm-imx7ulp.c
> @@ -0,0 +1,33 @@
> +/*
> + * Copyright (C) 2016 Freescale Semiconductor, Inc.
> + * Copyright (C) 2017 NXP
> + *
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +#include <linux/io.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +
> +#define SMC_PMCTRL 0x10
> +#define BP_PMCTRL_PSTOPO 16
> +#define PSTOPO_PSTOP3 0x3
> +
> +void __init imx7ulp_pm_init(void)
> +{
> + struct device_node *np;
> + void __iomem *smc1_base;
> +
> + np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-smc1");
so actually there no dt-binding for this compatible, because there is no driver?
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