From: Yann E. MORIN Date: Mon, 31 Oct 2016 21:33:40 +0000 (+0100) Subject: arm: sunxi: do not force USB for arch-sunxi X-Git-Url: http://git.dujemihanovic.xyz/html/static/git-favicon.png?a=commitdiff_plain;h=2997ee50547b34521c7e560055a490609e90a590;p=u-boot.git arm: sunxi: do not force USB for arch-sunxi Currently, USB is forced-enabled for the sunxi familly, and there is no way to disable it. However, USB takes a long time to initiliase, delaying the boot by up to 5 seconds (without any USB device attached!). This is a very long delay, especially in cases where USB booting is not wanted at all, and where the device is expected to boot relatively often (even in production). Change the way the dependencies are handled, by only forcibly selecting USB when CONFIG_DISTRO_DEFAULTS ("defaults suitable for booting general purpose Linux distributions") is set. This option defaults to y for the sunxi familly, so the current default behaviour is kept unchanged. Users interested in boot time and/or size will be able to disable this to further disable USB. With USB disabled, the time spent in U-Boot before handing control to the Linux kernel is about 1s now, down from ~5s (Nanopi Neo, sunxi H3). Signed-off-by: "Yann E. MORIN" Cc: Ian Campbell Cc: Hans De Goede Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede --- diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e6263c0535..220022bcd9 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -556,22 +556,22 @@ config ARCH_SUNXI bool "Support sunxi (Allwinner) SoCs" select CMD_GPIO select CMD_MMC if MMC - select CMD_USB + select CMD_USB if DISTRO_DEFAULTS select DM select DM_ETH select DM_GPIO select DM_KEYBOARD select DM_SERIAL - select DM_USB + select DM_USB if DISTRO_DEFAULTS select OF_BOARD_SETUP select OF_CONTROL select OF_SEPARATE select SPL_STACK_R if SUPPORT_SPL select SPL_SYS_MALLOC_SIMPLE if SUPPORT_SPL select SYS_NS16550 - select USB - select USB_STORAGE - select USB_KEYBOARD + select USB if DISTRO_DEFAULTS + select USB_STORAGE if DISTRO_DEFAULTS + select USB_KEYBOARD if DISTRO_DEFAULTS select USE_TINY_PRINTF config TARGET_TS4800