[RFC PATCH v1 14/14] arm: rockchip: rk3576: enable TPL DRAM init in Kconfig and defconfig

[Johan Axelsson]

Wire up the BLOB-free TPL DRAM init for RK3576:

Kconfig (arch/arm/mach-rockchip/Kconfig):
  Add 11 imply lines to ROCKCHIP_RK3576 to pull in the necessary
  TPL subsystems: TPL_CLK, TPL_DM, TPL_OF_CONTROL, TPL_OF_PLATDATA,
  TPL_RAM, TPL_REGMAP, TPL_ROCKCHIP_COMMON_BOARD, TPL_SERIAL,
  TPL_SYSCON, TPL_TINY_MEMSET, ROCKCHIP_SDRAM_COMMON.

Kconfig (arch/arm/mach-rockchip/rk3576/Kconfig):
  Set TPL_TEXT_BASE = 0x3ff82000.  This is the start of the SRAM
  region available for TPL between the boost stub (0x3ff81000) and
  the SPL load address (0x3ffc0000), giving ~248 KB.

Kconfig (drivers/ram/rockchip/Kconfig):
  Add RAM_ROCKCHIP_LPDDR5 config option, required for RK3576 boards
  with LPDDR5 memory.

defconfig (configs/sige5-rk3576_defconfig):
  - Disable ROCKCHIP_EXTERNAL_TPL (use our open-source TPL instead)
  - Enable CONFIG_TPL=y
  - Enable CONFIG_RAM_ROCKCHIP_LPDDR5=y for the Sige5 board

Signed-off-by: Johan Axelsson <johan.axelsson at proton.me>
---
 arch/arm/mach-rockchip/Kconfig        | 11 +++++++++++
 arch/arm/mach-rockchip/rk3576/Kconfig |  3 +++
 configs/sige5-rk3576_defconfig        |  3 +++
 drivers/ram/rockchip/Kconfig          |  7 +++++++
 4 files changed, 24 insertions(+)

diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 108713488af..3f76bf7a92a 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -488,6 +488,17 @@ config ROCKCHIP_RK3576
 	imply SPL_REGMAP
 	imply SPL_SERIAL
 	imply SPL_SYSCON
+	imply ROCKCHIP_SDRAM_COMMON
+	imply TPL_CLK
+	imply TPL_DM
+	imply TPL_OF_CONTROL
+	imply TPL_OF_PLATDATA
+	imply TPL_RAM
+	imply TPL_REGMAP
+	imply TPL_ROCKCHIP_COMMON_BOARD
+	imply TPL_SERIAL
+	imply TPL_SYSCON
+	imply TPL_TINY_MEMSET
 	imply ENV_RELOC_GD_ENV_ADDR
 	imply SYSRESET
 	help
diff --git a/arch/arm/mach-rockchip/rk3576/Kconfig b/arch/arm/mach-rockchip/rk3576/Kconfig
index f347caf8904..58f1eb9fcd6 100644
--- a/arch/arm/mach-rockchip/rk3576/Kconfig
+++ b/arch/arm/mach-rockchip/rk3576/Kconfig
@@ -1,5 +1,8 @@
 if ROCKCHIP_RK3576
 
+config TPL_TEXT_BASE
+	default 0x3ff82000
+
 config TARGET_ROC_PC_RK3576
 	bool "Firefly ROC-RK3576-PC"
 	help
diff --git a/configs/sige5-rk3576_defconfig b/configs/sige5-rk3576_defconfig
index be46f63798b..38148ccab09 100644
--- a/configs/sige5-rk3576_defconfig
+++ b/configs/sige5-rk3576_defconfig
@@ -4,6 +4,9 @@ CONFIG_COUNTER_FREQUENCY=24000000
 CONFIG_ARCH_ROCKCHIP=y
 CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3576-armsom-sige5"
 CONFIG_ROCKCHIP_RK3576=y
+# CONFIG_ROCKCHIP_EXTERNAL_TPL is not set
+CONFIG_TPL=y
+CONFIG_RAM_ROCKCHIP_LPDDR5=y
 CONFIG_SYS_LOAD_ADDR=0x40c00800
 CONFIG_DEBUG_UART_BASE=0x2AD40000
 CONFIG_DEBUG_UART_CLOCK=24000000
diff --git a/drivers/ram/rockchip/Kconfig b/drivers/ram/rockchip/Kconfig
index d707d09c1c8..51740ed1d12 100644
--- a/drivers/ram/rockchip/Kconfig
+++ b/drivers/ram/rockchip/Kconfig
@@ -48,4 +48,11 @@ config RAM_ROCKCHIP_LPDDR4
 	  This enables LPDDR4 sdram code support for the platforms based
 	  on Rockchip SoCs.
 
+config RAM_ROCKCHIP_LPDDR5
+	bool "LPDDR5 support for Rockchip SoCs"
+	help
+	  This enables LPDDR5 sdram code support for the platforms based
+	  on Rockchip SoCs. Required for RK3576 boards with LPDDR5 memory
+	  (e.g. Flipper One with 8 GB LPDDR5).
+
 endif # RAM_ROCKCHIP
-- 
2.45.1.windows.1