[PATCH v2 3/5] sunxi: SPL SPI: Add SPI boot support for the Allwinner R40 SoC

[Andre Przywara]

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 at arm.com>
---
 arch/arm/mach-sunxi/Kconfig         | 2 +-
 arch/arm/mach-sunxi/spl_spi_sunxi.c | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 3a3b673430..eb046160e6 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -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
diff --git a/arch/arm/mach-sunxi/spl_spi_sunxi.c b/arch/arm/mach-sunxi/spl_spi_sunxi.c
index cab6affe8d..357953cfce 100644
--- a/arch/arm/mach-sunxi/spl_spi_sunxi.c
+++ b/arch/arm/mach-sunxi/spl_spi_sunxi.c
@@ -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;
 
-- 
2.14.5