[PATCH 3/4] board: phytec: phycore_imx8mp: Make RAM size configuration fix

[Teresa Remmet]

We might not be able to always rely on the EEPROM introspection data.
So add a config option alternative which configures the RAM size
to a fix value.

We still try to read the EEPROM introspection data at this point.
So we can print the SoM information if available.

Signed-off-by: Teresa Remmet <t.remmet at phytec.de>
---
 board/phytec/phycore_imx8mp/Kconfig | 48 +++++++++++++++++++++++++++++
 board/phytec/phycore_imx8mp/spl.c   | 34 +++++++++++++++-----
 2 files changed, 74 insertions(+), 8 deletions(-)

diff --git a/board/phytec/phycore_imx8mp/Kconfig b/board/phytec/phycore_imx8mp/Kconfig
index f846d10bad9e..5ede39abc52b 100644
--- a/board/phytec/phycore_imx8mp/Kconfig
+++ b/board/phytec/phycore_imx8mp/Kconfig
@@ -12,5 +12,53 @@ config SYS_CONFIG_NAME
 config IMX_CONFIG
 	default "board/phytec/phycore_imx8mp/imximage-8mp-sd.cfg"
 
+config PHYCORE_IMX8MP_RAM_SIZE_FIX
+	bool "Set phyCORE-i.MX8MP RAM size fix instead of detecting"
+	default false
+	help
+	  RAM size is automatic being detected with the help of
+	  the EEPROM introspection data. Set RAM size to a fix value
+	  instead.
+
+choice
+	prompt "phyCORE-i.MX8MP RAM size"
+	depends on PHYCORE_IMX8MP_RAM_SIZE_FIX
+	default PHYCORE_IMX8MP_RAM_SIZE_2GB
+
+config PHYCORE_IMX8MP_RAM_SIZE_1GB
+	bool "1GB RAM"
+	help
+	  Set RAM size fix to 1GB for phyCORE-i.MX8MP.
+	  RAM frequency is configured independent.
+
+config PHYCORE_IMX8MP_RAM_SIZE_2GB
+	bool "2GB RAM"
+	help
+	  Set RAM size fix to 2GB for phyCORE-i.MX8MP.
+	  RAM frequency is configured independent.
+
+config PHYCORE_IMX8MP_RAM_SIZE_4GB
+	bool "4GB RAM"
+	help
+	  Set RAM size fix to 4GB for phyCORE-i.MX8MP.
+	  RAM frequency is configured independent.
+
+config PHYCORE_IMX8MP_RAM_SIZE_8GB
+	bool "8GB RAM"
+	select PHYCORE_IMX8MP_USE_2GHZ_RAM_TIMINGS
+	help
+	  Set RAM size fix to 8GB for phyCORE-i.MX8MP.
+	  Only 2GHz RAMs are supported.
+
+endchoice
+
+config PHYCORE_IMX8MP_USE_2GHZ_RAM_TIMINGS
+	bool "Use 2GHz RAM timings"
+	depends on PHYCORE_IMX8MP_RAM_SIZE_FIX
+	default false
+	help
+	  Use fix 2GHz RAM timings for phyCORE-i.MX8MP instead of
+	  1.5GHz timings.
+
 source "board/phytec/common/Kconfig"
 endif
diff --git a/board/phytec/phycore_imx8mp/spl.c b/board/phytec/phycore_imx8mp/spl.c
index f24f09301f1e..8a0c456859e2 100644
--- a/board/phytec/phycore_imx8mp/spl.c
+++ b/board/phytec/phycore_imx8mp/spl.c
@@ -50,20 +50,38 @@ void spl_dram_init(void)
 
 	ret = phytec_eeprom_data_setup_fallback(NULL, 0, EEPROM_ADDR,
 						EEPROM_ADDR_FALLBACK);
-	if (ret)
+	if (ret && !IS_ENABLED(CONFIG_PHYCORE_IMX8MP_RAM_SIZE_FIX))
 		goto out;
 
 	ret = phytec_imx8m_detect(NULL);
 	if (!ret)
 		phytec_print_som_info(NULL);
 
-	u8 rev = phytec_get_rev(NULL);
-	u8 somtype = phytec_get_som_type(NULL);
-
-	if (rev != PHYTEC_EEPROM_INVAL && (rev >= 3 || (somtype == SOM_TYPE_PCL && rev >= 1)))
-		use_2ghz_timings = true;
-
-	size = phytec_get_imx8m_ddr_size(NULL);
+	if (IS_ENABLED(CONFIG_PHYCORE_IMX8MP_RAM_SIZE_FIX)) {
+		if (IS_ENABLED(CONFIG_PHYCORE_IMX8MP_RAM_SIZE_1GB))
+			size = PHYTEC_IMX8MP_DDR_1GB;
+		else if (IS_ENABLED(CONFIG_PHYCORE_IMX8MP_RAM_SIZE_2GB))
+			size = PHYTEC_IMX8MP_DDR_2GB;
+		else if (IS_ENABLED(CONFIG_PHYCORE_IMX8MP_RAM_SIZE_4GB))
+			size = PHYTEC_IMX8MP_DDR_4GB;
+		else if (IS_ENABLED(CONFIG_PHYCORE_IMX8MP_RAM_SIZE_8GB))
+			size = PHYTEC_IMX8MP_DDR_8GB;
+		if (IS_ENABLED(CONFIG_PHYCORE_IMX8MP_USE_2GHZ_RAM_TIMINGS)) {
+			if (size == PHYTEC_IMX8MP_DDR_4GB)
+				size = PHYTEC_IMX8MP_DDR_4GB_2GHZ;
+			else
+				use_2ghz_timings = true;
+		}
+	} else {
+		u8 rev = phytec_get_rev(NULL);
+		u8 somtype = phytec_get_som_type(NULL);
+
+		if (rev != PHYTEC_EEPROM_INVAL &&
+		    (rev >= 3 || (somtype == SOM_TYPE_PCL && rev >= 1)))
+			use_2ghz_timings = true;
+
+		size = phytec_get_imx8m_ddr_size(NULL);
+	}
 
 	switch (size) {
 	case PHYTEC_IMX8MP_DDR_1GB:
-- 
2.34.1