[coreboot-gerrit] [S] Change in coreboot[main]: mb/up/squared: Make mini PCIe port mode configurable

[Reto Buerki (Code Review)]

Reto Buerki has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/80261?usp=email )

Change subject: mb/up/squared: Make mini PCIe port mode configurable
......................................................................

mb/up/squared: Make mini PCIe port mode configurable

Add ENABLE_MSATA config knob and pad configuration to put Mini PCIe port
into mSATA mode.

Tested with Kingston SUV500MS120G mSATA SSD. The pad configuration has
been deduced via inteltool/intelp2m by toggling the stock BIOS setting.

Change-Id: Ic2da1dd4252ebb5e373bc65418e321f566d4c10f
Signed-off-by: Reto Buerki 
---
M src/mainboard/up/squared/Kconfig
M src/mainboard/up/squared/gpio.h
M src/mainboard/up/squared/romstage.c
3 files changed, 16 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/61/80261/1

diff --git a/src/mainboard/up/squared/Kconfig b/src/mainboard/up/squared/Kconfig
index 91b1cbb..ee2dd12 100644
--- a/src/mainboard/up/squared/Kconfig
+++ b/src/mainboard/up/squared/Kconfig
@@ -74,4 +74,8 @@
    bool
    default y

+config ENABLE_MSATA
+	bool "Use mini-PCIe port for mSATA"
+	default n
+
 endif
diff --git a/src/mainboard/up/squared/gpio.h b/src/mainboard/up/squared/gpio.h
index 1aecc18..876b326 100644
--- a/src/mainboard/up/squared/gpio.h
+++ b/src/mainboard/up/squared/gpio.h
@@ -777,4 +777,14 @@
    PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_43, UP_20K, DEEP, NF1, HIZCRx0, DISPUPD),
 };

+/*
+ * Pad configuration to put MiniPCIe port into mSATA mode.
+ */
+static const struct pad_config msata_mode_gpio_table[] = {
+	/*  ------- GPIO Group North-West ------- */
+
+	/* GPIO_213 - GPIO */
+	PAD_CFG_TERM_GPO(GPIO_213, 0, UP_20K, DEEP),
+};
+
 #endif /* CFG_GPIO_H */
diff --git a/src/mainboard/up/squared/romstage.c b/src/mainboard/up/squared/romstage.c
index 12e4135..bc7a13d 100644
--- a/src/mainboard/up/squared/romstage.c
+++ b/src/mainboard/up/squared/romstage.c
@@ -103,6 +103,8 @@
    FSP_M_CONFIG *config = &memupd->FspmConfig;

gpio_configure_pads(gpio_table, ARRAY_SIZE(gpio_table));
+	if (CONFIG(ENABLE_MSATA))
+		gpio_configure_pads(msata_mode_gpio_table, ARRAY_SIZE(msata_mode_gpio_table));

uint8_t memory_skuid = get_memory_skuid();
    printk(BIOS_DEBUG, "MAINBOARD: Found memory SKU ID: 0x%02x\n", memory_skuid);