Re: [PATCH v14 15/16] riscv: Update Canaan Kendryte K210 defconfig

From: Atish Patra <atishp@atishpatra.org>
To: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Atish Patra <atish.patra@wdc.com>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	Anup Patel <anup.patel@wdc.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Sean Anderson <seanga2@gmail.com>
Subject: Re: [PATCH v14 15/16] riscv: Update Canaan Kendryte K210 defconfig
Date: Tue, 2 Feb 2021 10:49:45 -0800	[thread overview]
Message-ID: <CAOnJCULJbjTA8adGvPg48=hFu_U0vpp8roFUpeMbkCNQ-ad_Ew@mail.gmail.com> (raw)
In-Reply-To: <20210202103623.200809-16-damien.lemoal@wdc.com>

On Tue, Feb 2, 2021 at 2:37 AM Damien Le Moal <damien.lemoal@wdc.com> wrote:
>
> Update the Kendryte k210 nommu default configuration file
> (nommu_k210_defconfig) to include device drivers for reset, reboot,
> I2C, SPI, gpio and LEDs support. Virtual Terminal support is also
> disabled as no terminal devices are supported and enabled. Disabling
> CONFIG_VT (removing the no longer needed override for
> CONFIG_VGA_CONSOLE) reduces the kernel image size by about 65 KB.
>
> This default configuration remains suitable for a system using an
> initramfs cpio file linked into the kernel image.
>
> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
> Reviewed-by: Anup Patel <anup@brainfault.org>
> ---
>  arch/riscv/configs/nommu_k210_defconfig | 44 ++++++++++++++++++++-----
>  1 file changed, 36 insertions(+), 8 deletions(-)
>
> diff --git a/arch/riscv/configs/nommu_k210_defconfig b/arch/riscv/configs/nommu_k210_defconfig
> index 368a28cf1467..b16a2a12c82a 100644
> --- a/arch/riscv/configs/nommu_k210_defconfig
> +++ b/arch/riscv/configs/nommu_k210_defconfig
> @@ -1,17 +1,19 @@
>  # CONFIG_CPU_ISOLATION is not set
> -CONFIG_LOG_BUF_SHIFT=15
> +CONFIG_LOG_BUF_SHIFT=13
>  CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12
>  CONFIG_BLK_DEV_INITRD=y
> -CONFIG_INITRAMFS_FORCE=y
> +# CONFIG_RD_GZIP is not set
>  # CONFIG_RD_BZIP2 is not set
>  # CONFIG_RD_LZMA is not set
>  # CONFIG_RD_XZ is not set
>  # CONFIG_RD_LZO is not set
>  # CONFIG_RD_LZ4 is not set
> +# CONFIG_RD_ZSTD is not set
>  CONFIG_CC_OPTIMIZE_FOR_SIZE=y
>  # CONFIG_SYSFS_SYSCALL is not set
>  # CONFIG_FHANDLE is not set
>  # CONFIG_BASE_FULL is not set
> +# CONFIG_FUTEX is not set
>  # CONFIG_EPOLL is not set
>  # CONFIG_SIGNALFD is not set
>  # CONFIG_TIMERFD is not set
> @@ -25,15 +27,17 @@ CONFIG_EMBEDDED=y
>  # CONFIG_VM_EVENT_COUNTERS is not set
>  # CONFIG_COMPAT_BRK is not set
>  CONFIG_SLOB=y
> -# CONFIG_SLAB_MERGE_DEFAULT is not set
>  # CONFIG_MMU is not set
>  CONFIG_SOC_CANAAN=y
> +CONFIG_SOC_CANAAN_K210_DTB_SOURCE="k210_generic"
>  CONFIG_MAXPHYSMEM_2GB=y
>  CONFIG_SMP=y
>  CONFIG_NR_CPUS=2
>  CONFIG_CMDLINE="earlycon console=ttySIF0"
>  CONFIG_CMDLINE_FORCE=y
> -CONFIG_JUMP_LABEL=y
> +# CONFIG_SECCOMP is not set
> +# CONFIG_STACKPROTECTOR is not set
> +# CONFIG_GCC_PLUGINS is not set
>  # CONFIG_BLOCK is not set
>  CONFIG_BINFMT_FLAT=y
>  # CONFIG_COREDUMP is not set
> @@ -41,23 +45,47 @@ CONFIG_DEVTMPFS=y
>  CONFIG_DEVTMPFS_MOUNT=y
>  # CONFIG_FW_LOADER is not set
>  # CONFIG_ALLOW_DEV_COREDUMP is not set
> -# CONFIG_INPUT_KEYBOARD is not set
> -# CONFIG_INPUT_MOUSE is not set
> +# CONFIG_INPUT is not set
>  # CONFIG_SERIO is not set
> +# CONFIG_VT is not set
> +# CONFIG_UNIX98_PTYS is not set
>  # CONFIG_LEGACY_PTYS is not set
>  # CONFIG_LDISC_AUTOLOAD is not set
>  # CONFIG_HW_RANDOM is not set
>  # CONFIG_DEVMEM is not set
> +CONFIG_I2C=y
> +# CONFIG_I2C_COMPAT is not set
> +CONFIG_I2C_CHARDEV=y
> +# CONFIG_I2C_HELPER_AUTO is not set
> +CONFIG_I2C_DESIGNWARE_PLATFORM=y
> +CONFIG_SPI=y
> +# CONFIG_SPI_MEM is not set
> +CONFIG_SPI_DESIGNWARE=y
> +CONFIG_SPI_DW_MMIO=y
> +# CONFIG_GPIO_CDEV_V1 is not set
> +CONFIG_GPIO_DWAPB=y
> +CONFIG_GPIO_SIFIVE=y
> +CONFIG_POWER_RESET=y
> +CONFIG_POWER_RESET_SYSCON=y
>  # CONFIG_HWMON is not set
> -# CONFIG_VGA_CONSOLE is not set
> -# CONFIG_HID is not set
>  # CONFIG_USB_SUPPORT is not set
> +CONFIG_NEW_LEDS=y
> +CONFIG_LEDS_CLASS=y
> +CONFIG_LEDS_GPIO=y
> +CONFIG_LEDS_USER=y
>  # CONFIG_VIRTIO_MENU is not set
> +# CONFIG_VHOST_MENU is not set
> +# CONFIG_SURFACE_PLATFORMS is not set
> +# CONFIG_FILE_LOCKING is not set
>  # CONFIG_DNOTIFY is not set
>  # CONFIG_INOTIFY_USER is not set
>  # CONFIG_MISC_FILESYSTEMS is not set
>  CONFIG_LSM="[]"
>  CONFIG_PRINTK_TIME=y
> +# CONFIG_SYMBOLIC_ERRNAME is not set
> +# CONFIG_DEBUG_BUGVERBOSE is not set
> +# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
> +# CONFIG_FRAME_POINTER is not set
>  # CONFIG_DEBUG_MISC is not set
>  CONFIG_PANIC_ON_OOPS=y
>  # CONFIG_SCHED_DEBUG is not set
> --
> 2.29.2
>
>
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Reviewed-by: Atish Patra <atish.patra@wdc.com>

-- 
Regards,
Atish

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