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Date: Wed, 27 Nov 2019 17:57:53 +0100
From: Paul Cercueil <paul@...pouillou.net>
To: Zhou Yanjie <zhouyanjie@...o.com>
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, robh+dt@...nel.org,
paul.burton@...s.com, paulburton@...nel.org, jhogan@...nel.org,
mripard@...nel.org, shawnguo@...nel.org, mark.rutland@....com,
syq@...ian.org, ralf@...ux-mips.org, heiko@...ech.de,
icenowy@...c.io, laurent.pinchart@...asonboard.com,
krzk@...nel.org, geert+renesas@...der.be,
prasannatsmkumar@...il.com, sernia.zhou@...mail.com,
zhenwenjin@...il.com, 772753199@...com
Subject: Re: [PATCH v4 4/6] MIPS: Ingenic: Initial YSH & ATIL CU Neo board
support.
Hi Zhou,
Le mer., nov. 27, 2019 at 01:06, Zhou Yanjie <zhouyanjie@...o.com> a
écrit :
> Add a device tree for the Ingenic X1000 based YSH & ATIL CU Neo board.
> Note that this is unselectable via Kconfig until the X1000 SoC is made
> selectable in a later commit.
>
> Signed-off-by: Zhou Yanjie <zhouyanjie@...o.com>
> ---
>
> Notes:
> v1->v2:
> Rebase on top of mips-next, use TCU for system timer and
> clocksource.
>
> v2->v3:
> No change.
>
> v3->v4:
> 1.Adjust "model" in "cu1000.dts" to match the description in
> "devices.yaml".
> 2.Adjust "bool" in "Kconfig" to avoid duplicate names with
> subsequent boards.
>
> arch/mips/boot/dts/ingenic/Makefile | 1 +
> arch/mips/boot/dts/ingenic/cu1000.dts | 52 ++++++++++++++++++
> arch/mips/configs/cu1000_defconfig | 100
> ++++++++++++++++++++++++++++++++++
> arch/mips/jz4740/Kconfig | 4 ++
> 4 files changed, 157 insertions(+)
> create mode 100644 arch/mips/boot/dts/ingenic/cu1000.dts
> create mode 100644 arch/mips/configs/cu1000_defconfig
>
> diff --git a/arch/mips/boot/dts/ingenic/Makefile
> b/arch/mips/boot/dts/ingenic/Makefile
> index 9cc4844..f6db7bb 100644
> --- a/arch/mips/boot/dts/ingenic/Makefile
> +++ b/arch/mips/boot/dts/ingenic/Makefile
> @@ -2,5 +2,6 @@
> dtb-$(CONFIG_JZ4740_QI_LB60) += qi_lb60.dtb
> dtb-$(CONFIG_JZ4770_GCW0) += gcw0.dtb
> dtb-$(CONFIG_JZ4780_CI20) += ci20.dtb
> +dtb-$(CONFIG_X1000_CU1000) += cu1000.dtb
>
> obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .o, $(dtb-y))
> diff --git a/arch/mips/boot/dts/ingenic/cu1000.dts
> b/arch/mips/boot/dts/ingenic/cu1000.dts
> new file mode 100644
> index 00000000..f92f6af
> --- /dev/null
> +++ b/arch/mips/boot/dts/ingenic/cu1000.dts
> @@ -0,0 +1,52 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/dts-v1/;
> +
> +#include "x1000.dtsi"
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/clock/ingenic,tcu.h>
> +
> +/ {
> + compatible = "yna,cu1000", "ingenic,x1000";
> + model = "YSH & ATIL General Board CU Neo";
> +
> + aliases {
> + serial2 = &uart2;
> + };
> +
> + chosen {
> + stdout-path = &uart2;
> + };
> +
> + memory {
> + device_type = "memory";
> + reg = <0x0 0x04000000>;
> + };
> +};
> +
> +&exclk {
> + clock-frequency = <24000000>;
> +};
> +
> +&tcu {
> + /* 1500 kHz for the system timer and clocksource */
> + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER2>;
> + assigned-clock-rates = <1500000>, <1500000>;
> +
> + /* Use channel #1 for the system timer channel #2 for the
> clocksource */
> + ingenic,pwm-channels-mask = <0xfa>;
From the mask used, I'm gessing that you're reserving channels #0 and
#2, not #1 and #2.
> +};
> +
> +&uart2 {
> + status = "okay";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pins_uart2>;
> +};
> +
> +&pinctrl {
> + pins_uart2: uart2 {
> + function = "uart2";
> + groups = "uart2-data-d";
> + bias-disable;
> + };
> +};
> diff --git a/arch/mips/configs/cu1000_defconfig
> b/arch/mips/configs/cu1000_defconfig
> new file mode 100644
> index 00000000..88729ee
> --- /dev/null
> +++ b/arch/mips/configs/cu1000_defconfig
> @@ -0,0 +1,100 @@
> +CONFIG_LOCALVERSION_AUTO=y
> +CONFIG_KERNEL_GZIP=y
> +CONFIG_SYSVIPC=y
> +CONFIG_NO_HZ_IDLE=y
> +CONFIG_HIGH_RES_TIMERS=y
> +CONFIG_PREEMPT=y
> +CONFIG_IKCONFIG=y
> +CONFIG_IKCONFIG_PROC=y
> +CONFIG_LOG_BUF_SHIFT=14
> +CONFIG_CGROUPS=y
> +CONFIG_MEMCG=y
> +CONFIG_MEMCG_KMEM=y
> +CONFIG_CGROUP_SCHED=y
> +CONFIG_CGROUP_FREEZER=y
> +CONFIG_CGROUP_DEVICE=y
> +CONFIG_CGROUP_CPUACCT=y
> +CONFIG_NAMESPACES=y
> +CONFIG_USER_NS=y
> +CONFIG_BLK_DEV_INITRD=y
> +CONFIG_INITRAMFS_SOURCE="arch/mips/boot/ramdisk.cpio.gz"
> +CONFIG_CC_OPTIMIZE_FOR_SIZE=y
> +CONFIG_SYSCTL_SYSCALL=y
> +CONFIG_KALLSYMS_ALL=y
> +CONFIG_EMBEDDED=y
> +# CONFIG_VM_EVENT_COUNTERS is not set
> +# CONFIG_COMPAT_BRK is not set
> +CONFIG_SLAB=y
> +CONFIG_MACH_INGENIC=y
> +CONFIG_X1000_CU1000=y
> +CONFIG_HIGHMEM=y
> +CONFIG_HZ_100=y
> +CONFIG_HZ=100
This line looks malformed.
> +# CONFIG_SECCOMP is not set
> +# CONFIG_SUSPEND is not set
> +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
> +# CONFIG_COMPACTION is not set
> +CONFIG_CMA=y
> +CONFIG_CMA_AREAS=7
> +CONFIG_UEVENT_HELPER=y
> +CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
> +CONFIG_DEVTMPFS=y
> +# CONFIG_FW_LOADER is not set
> +# CONFIG_ALLOW_DEV_COREDUMP is not set
> +# CONFIG_INPUT_MOUSEDEV is not set
> +# CONFIG_INPUT_KEYBOARD is not set
> +# CONFIG_INPUT_MOUSE is not set
> +# CONFIG_SERIO is not set
> +CONFIG_VT_HW_CONSOLE_BINDING=y
> +CONFIG_LEGACY_PTY_COUNT=2
> +CONFIG_SERIAL_EARLYCON=y
> +CONFIG_SERIAL_8250=y
> +CONFIG_SERIAL_8250_CONSOLE=y
> +CONFIG_SERIAL_8250_NR_UARTS=3
> +CONFIG_SERIAL_8250_RUNTIME_UARTS=3
> +CONFIG_SERIAL_8250_INGENIC=y
> +CONFIG_SERIAL_OF_PLATFORM=y
> +# CONFIG_HW_RANDOM is not set
> +CONFIG_GPIO_SYSFS=y
> +# CONFIG_HWMON is not set
> +# CONFIG_LCD_CLASS_DEVICE is not set
> +# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
> +# CONFIG_VGA_CONSOLE is not set
> +# CONFIG_HID is not set
> +# CONFIG_USB_SUPPORT is not set
> +# CONFIG_IOMMU_SUPPORT is not set
> +CONFIG_NVMEM=y
> +CONFIG_NVMEM_SYSFS=y
> +CONFIG_EXT4_FS=y
> +# CONFIG_DNOTIFY is not set
> +CONFIG_PROC_KCORE=y
> +# CONFIG_PROC_PAGE_MONITOR is not set
> +CONFIG_TMPFS=y
> +CONFIG_CONFIGFS_FS=y
> +CONFIG_NLS=y
> +CONFIG_NLS_CODEPAGE_936=y
> +CONFIG_NLS_CODEPAGE_950=y
> +CONFIG_NLS_ASCII=y
> +CONFIG_NLS_ISO8859_1=y
> +CONFIG_NLS_UTF8=y
> +CONFIG_CRYPTO_ECHAINIV=y
> +CONFIG_CRYPTO_AES=y
> +CONFIG_CRYPTO_DEFLATE=y
> +CONFIG_CRYPTO_LZO=y
> +CONFIG_PRINTK_TIME=y
> +CONFIG_CONSOLE_LOGLEVEL_DEFAULT=15
> +CONFIG_CONSOLE_LOGLEVEL_QUIET=15
> +CONFIG_MESSAGE_LOGLEVEL_DEFAULT=7
> +CONFIG_DEBUG_INFO=y
> +CONFIG_STRIP_ASM_SYMS=y
> +CONFIG_DEBUG_FS=y
> +CONFIG_MAGIC_SYSRQ=y
> +CONFIG_PANIC_ON_OOPS=y
> +CONFIG_PANIC_TIMEOUT=10
> +# CONFIG_SCHED_DEBUG is not set
> +# CONFIG_DEBUG_PREEMPT is not set
> +CONFIG_STACKTRACE=y
> +# CONFIG_FTRACE is not set
> +CONFIG_CMDLINE_BOOL=y
> +CONFIG_CMDLINE="console=ttyS2,115200n8 mem=32M@0x0 earlycon
> clk_ignore_unused"
You already specify the stdout-path in the devicetree, no need to pass
the "console" parameter.
For the "mem" parameter, it's already set in the devicetree, so no need
to set it again here.
Besides, in the devicetree it is set to 64 MiB.
Why is clk_ignore_unused needed?
Cheers,
-Paul
> +CONFIG_CMDLINE_OVERRIDE=y
> diff --git a/arch/mips/jz4740/Kconfig b/arch/mips/jz4740/Kconfig
> index 6b96844..ccaf507 100644
> --- a/arch/mips/jz4740/Kconfig
> +++ b/arch/mips/jz4740/Kconfig
> @@ -16,6 +16,10 @@ config JZ4780_CI20
> bool "MIPS Creator CI20"
> select MACH_JZ4780
>
> +config X1000_CU1000
> + bool "YSH & ATIL General Module CU1000"
> + select MACH_X1000
> +
> endchoice
>
> config MACH_JZ4740
> --
> 2.7.4
>
>
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