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sunxi: SPL SPI: Add SPI boot support for the Allwinner R40 SoC

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Now that we can easily select an SoC specific SPI0 base address, adding
support for the Allwinner R40 is fairly trivial:
We set the base address, add this SoC to the ones that use PC23 and
enable it in Kconfig.

This allows booting from SPI flash on R40 boards.

Tested on a Bananapi M2 Berry with SPI flash connected to the header pins.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Andre Przywara 2020-01-28 00:46:42 +00:00 committed by Jagan Teki
parent 56f51f3875
commit da19a0dbc8
2 changed files with 6 additions and 2 deletions
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2
arch/arm/mach-sunxi/Kconfig
View file

@ -994,7 +994,7 @@ config SPL_STACK_R_ADDR
config SPL_SPI_SUNXI
bool "Support for SPI Flash on Allwinner SoCs in SPL"
depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUNXI_H3_H5 || MACH_SUN50I
depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUNXI_H3_H5 || MACH_SUN50I || MACH_SUN8I_R40
help
Enable support for SPI Flash. This option allows SPL to read from
sunxi SPI Flash. It uses the same method as the boot ROM, so does

6
arch/arm/mach-sunxi/spl_spi_sunxi.c
View file

@ -94,7 +94,8 @@ static void spi0_pinmux_setup(unsigned int pin_function)
for (pin = SUNXI_GPC(0); pin <= SUNXI_GPC(2); pin++)
sunxi_gpio_set_cfgpin(pin, pin_function);
if (IS_ENABLED(CONFIG_MACH_SUN4I) || IS_ENABLED(CONFIG_MACH_SUN7I))
if (IS_ENABLED(CONFIG_MACH_SUN4I) || IS_ENABLED(CONFIG_MACH_SUN7I) ||
IS_ENABLED(CONFIG_MACH_SUN8I_R40))
sunxi_gpio_set_cfgpin(SUNXI_GPC(23), pin_function);
else
sunxi_gpio_set_cfgpin(SUNXI_GPC(3), pin_function);
@ -107,6 +108,9 @@ static bool is_sun6i_gen_spi(void)
static uintptr_t spi0_base_address(void)
{
if (IS_ENABLED(CONFIG_MACH_SUN8I_R40))
return 0x01C05000;
if (!is_sun6i_gen_spi())
return 0x01C05000;