[PATCH v2 14/15] rockchip: rk3328-rock64: Enable boot from SPI NOR flash

[Jonas Karlman]

Add Kconfig options to enable support for booting from SPI NOR flash on
Pine64 Rock64.

The generated bootable u-boot-rockchip-spi.bin can be written to 0x0 of
SPI NOR flash. The FIT image is loaded from 0x60000, same as on RK35xx
boards.

  => sf probe
  SF: Detected gd25q128 with page size 256 Bytes, erase size 4 KiB, total 16 MiB

  => load mmc 1:1 10000000 u-boot-rockchip-spi.bin
  1359872 bytes read in 65 ms (20 MiB/s)

  => sf update ${fileaddr} 0 ${filesize}
  device 0 offset 0x0, size 0x14c000
  1118208 bytes written, 241664 bytes skipped in 8.516s, speed 163516 B/s

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Dragan Simic <dsimic at manjaro.org>
---
v2:
- Include SPI flash pinctrl nodes in SPL
- Enable SPI_FLASH_XTX
- Collect r-b tag
---
 arch/arm/dts/rk3328-rock64-u-boot.dtsi | 16 ++++++++++++++++
 configs/rock64-rk3328_defconfig        |  9 +++++++++
 2 files changed, 25 insertions(+)

diff --git a/arch/arm/dts/rk3328-rock64-u-boot.dtsi b/arch/arm/dts/rk3328-rock64-u-boot.dtsi
index 9de645d8d7ab..85426495c3d8 100644
--- a/arch/arm/dts/rk3328-rock64-u-boot.dtsi
+++ b/arch/arm/dts/rk3328-rock64-u-boot.dtsi
@@ -39,6 +39,22 @@
 	};
 };
 
+&spi0m2_clk {
+	bootph-pre-ram;
+};
+
+&spi0m2_cs0 {
+	bootph-pre-ram;
+};
+
+&spi0m2_rx {
+	bootph-pre-ram;
+};
+
+&spi0m2_tx {
+	bootph-pre-ram;
+};
+
 &vcc_sd {
 	bootph-pre-ram;
 };
diff --git a/configs/rock64-rk3328_defconfig b/configs/rock64-rk3328_defconfig
index feda87014286..0c640d7eaadc 100644
--- a/configs/rock64-rk3328_defconfig
+++ b/configs/rock64-rk3328_defconfig
@@ -13,6 +13,7 @@ CONFIG_DEFAULT_DEVICE_TREE="rk3328-rock64"
 CONFIG_DM_RESET=y
 CONFIG_ROCKCHIP_RK3328=y
 CONFIG_TPL_ROCKCHIP_COMMON_BOARD=y
+CONFIG_ROCKCHIP_SPI_IMAGE=y
 CONFIG_TPL_LIBCOMMON_SUPPORT=y
 CONFIG_TPL_LIBGENERIC_SUPPORT=y
 CONFIG_SPL_STACK_R_ADDR=0x600000
@@ -20,6 +21,8 @@ CONFIG_SPL_STACK=0x400000
 CONFIG_TPL_SYS_MALLOC_F_LEN=0x800
 CONFIG_DEBUG_UART_BASE=0xFF130000
 CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_SPL_SPI_FLASH_SUPPORT=y
+CONFIG_SPL_SPI=y
 CONFIG_SYS_LOAD_ADDR=0x800800
 CONFIG_DEBUG_UART=y
 # CONFIG_ANDROID_BOOT_IMAGE is not set
@@ -41,6 +44,8 @@ CONFIG_SPL_BSS_MAX_SIZE=0x2000
 # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
 CONFIG_SPL_STACK_R=y
 CONFIG_SPL_POWER=y
+CONFIG_SPL_SPI_LOAD=y
+CONFIG_SYS_SPI_U_BOOT_OFFS=0x60000
 CONFIG_SPL_ATF=y
 CONFIG_SPL_ATF_NO_PLATFORM_PARAM=y
 CONFIG_TPL_SYS_MALLOC_SIMPLE=y
@@ -78,7 +83,11 @@ CONFIG_MISC=y
 CONFIG_ROCKCHIP_EFUSE=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_SPI_FLASH_SFDP_SUPPORT=y
 CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_XTX=y
 CONFIG_PHY_REALTEK=y
 CONFIG_DM_ETH_PHY=y
 CONFIG_PHY_GIGE=y
-- 
2.43.0