[Buildroot] [PATCH 2/2] rpi-firmware: modify settings for Pi 2
Yann E. MORIN
yann.morin.1998 at free.fr
Sat May 2 15:56:07 UTC 2015
Floris, All,
On 2015-05-02 17:10 +0200, Floris Bos spake thusly:
> Remove low-level settings from config.txt like arm_freq and sdram_freq.
> The defaults should be good for most and differ by Pi model.
> E.g. the Pi 2 runs at 900 Mhz by default, setting arm_freq=700
> like we had previously would underclock it.
>
> Add short description in comments to options.
> Mention initramfs option.
>
> Remove obsolete options from cmdline.txt
>
> Signed-off-by: Floris Bos <bos at je-eigen-domein.nl>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Regards,
Yann E. MORIN.
> ---
> package/rpi-firmware/cmdline.txt | 2 +-
> package/rpi-firmware/config.txt | 14 ++++++++++----
> 2 files changed, 11 insertions(+), 5 deletions(-)
>
> diff --git a/package/rpi-firmware/cmdline.txt b/package/rpi-firmware/cmdline.txt
> index 061e54b..38aa378 100644
> --- a/package/rpi-firmware/cmdline.txt
> +++ b/package/rpi-firmware/cmdline.txt
> @@ -1 +1 @@
> -dwc_otg.fiq_fix_enable=1 sdhci-bcm2708.sync_after_dma=0 dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootwait
> +root=/dev/mmcblk0p2 rootwait
> diff --git a/package/rpi-firmware/config.txt b/package/rpi-firmware/config.txt
> index 994972b..aa8d2ab 100644
> --- a/package/rpi-firmware/config.txt
> +++ b/package/rpi-firmware/config.txt
> @@ -4,11 +4,17 @@
> # See http://buildroot.org/downloads/manual/manual.html#rootfs-custom
> # and http://elinux.org/RPiconfig for a description of config.txt syntax
>
> -arm_freq=700
> -core_freq=250
> kernel=zImage
> +
> +# To use an external initramfs file
> +#initramfs rootfs.cpio.gz
> +
> +# Disable overscan assuming the display supports displaying the full resolution
> +# If the text shown on the screen disappears off the edge, comment this out
> disable_overscan=1
> +
> +# How much memory in MB to assign to the GPU on Pi models having
> +# 256, 512 or 1024 MB total memory
> gpu_mem_256=100
> gpu_mem_512=100
> -sdram_freq=400
> -over_voltage=0
> +gpu_mem_1024=100
> --
> 2.1.4
>
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> http://lists.busybox.net/mailman/listinfo/buildroot
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