mb/google/nissa/var/craask: Modify GPIOs for NVMe
Modify NVMe clkreq pin to GPP_D7 from GPP_D6.The design change is for
commonality of GPIO settings. To reserve craask GPIO table and add
craaskneto/craaskino's NVMe GPIO setting. In the change, clkreq# will
be 2 and clksrc is still 1.
BUG=b:259211172
TEST=Verify on reworked craask DUT to boot up from NVMe.
Change-Id: If45c1a87144d5370b1ca2525295fb7947639362f
Signed-off-by: Ren Kuo <ren.kuo@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71170
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/brya/variants/craask/fw_config.c b/src/mainboard/google/brya/variants/craask/fw_config.c
index d667910..937e90d 100644
--- a/src/mainboard/google/brya/variants/craask/fw_config.c
+++ b/src/mainboard/google/brya/variants/craask/fw_config.c
@@ -50,39 +50,16 @@
static const struct pad_config nvme_disable_pads[] = {
/* B4 : SSD_PERST_L */
PAD_NC_LOCK(GPP_B4, NONE, LOCK_CONFIG),
+ /* D7 : SSD_CLKREQ_ODL */
+ PAD_NC(GPP_D7, NONE),
/* D11 : EN_PP3300_SSD */
PAD_NC_LOCK(GPP_D11, NONE, LOCK_CONFIG),
/* E17 : SSD_PLN_L */
PAD_NC_LOCK(GPP_E17, NONE, LOCK_CONFIG),
- /*
- * Note: don't disable GPP_D6 = SSD_CLKREQ_ODL, since this is used as
- * WWAN_EN on LTE variants.
- */
-};
-
-/*
- * GPP_D6 is used as WWAN_EN on LTE variants and SSD_CLKREQ_ODL on NVMe
- * variants (there is no craask variant supporting both LTE and NVMe).
- * In craask/gpio.c, it's set to WWAN_EN since this needs to be done in
- * bootblock. So we override it to SSD_CLKREQ_ODL here for NVMe variants.
- */
-static const struct pad_config nvme_enable_pads[] = {
- /* D6 : SRCCLKREQ1# ==> SSD_CLKREQ_ODL */
- PAD_CFG_NF(GPP_D6, NONE, DEEP, NF1),
};
void fw_config_gpio_padbased_override(struct pad_config *padbased_table)
{
- /*
- * Since GPP_D6 is used as WWAN_EN on LTE variants and SSD_CLKREQ_ODL on
- * NVMe variants, we don't support both together. If there's a variant
- * using both in the future, this GPIO handling will need to be updated.
- */
- if (fw_config_probe(FW_CONFIG(DB_USB, DB_1C_LTE)) &&
- fw_config_probe(FW_CONFIG(STORAGE, STORAGE_NVME))) {
- printk(BIOS_ERR, "LTE and NVMe together is not supported on craask\n");
- }
-
if (!fw_config_probe(FW_CONFIG(DB_USB, DB_1C_LTE))) {
printk(BIOS_INFO, "Disable LTE-related GPIO pins on craask.\n");
gpio_padbased_override(padbased_table, lte_disable_pads,
@@ -107,16 +84,7 @@
ARRAY_SIZE(stylus_disable_pads));
}
- if (!fw_config_is_provisioned() ||
- fw_config_probe(FW_CONFIG(STORAGE, STORAGE_NVME))) {
- /*
- * Note: this must be done after lte_disable_pads, otherwise
- * GPP_D6 will be disabled again.
- */
- printk(BIOS_INFO, "Enable NVMe SSD GPIO pins.\n");
- gpio_padbased_override(padbased_table, nvme_enable_pads,
- ARRAY_SIZE(nvme_enable_pads));
- } else {
+ if (fw_config_is_provisioned() && !fw_config_probe(FW_CONFIG(STORAGE, STORAGE_NVME))) {
printk(BIOS_INFO, "Disable NVMe SSD GPIO pins.\n");
gpio_padbased_override(padbased_table, nvme_disable_pads,
ARRAY_SIZE(nvme_disable_pads));
diff --git a/src/mainboard/google/brya/variants/craask/gpio.c b/src/mainboard/google/brya/variants/craask/gpio.c
index 5d0db35..bebc8d2 100644
--- a/src/mainboard/google/brya/variants/craask/gpio.c
+++ b/src/mainboard/google/brya/variants/craask/gpio.c
@@ -13,8 +13,8 @@
PAD_CFG_GPO_LOCK(GPP_B4, 1, LOCK_CONFIG),
/* D6 : WWAN_EN */
PAD_CFG_GPO(GPP_D6, 1, DEEP),
- /* D7 : WLAN_CLKREQ_ODL */
- PAD_NC(GPP_D7, NONE),
+ /* D7 : SRCCLKREQ1# ==> SSD_CLKREQ_ODL */
+ PAD_CFG_NF(GPP_D7, NONE, DEEP, NF1),
/* D11 : EN_PP3300_SSD */
PAD_CFG_GPO_LOCK(GPP_D11, 1, LOCK_CONFIG),
/* E17 : SSD_PLN_L */
diff --git a/src/mainboard/google/brya/variants/craask/overridetree.cb b/src/mainboard/google/brya/variants/craask/overridetree.cb
index 1a733fb..19cf876 100644
--- a/src/mainboard/google/brya/variants/craask/overridetree.cb
+++ b/src/mainboard/google/brya/variants/craask/overridetree.cb
@@ -447,10 +447,10 @@
probe SD_CARD SD_GL9750S
end
device ref pcie_rp9 on
- # Enable NVMe SSD PCIe 9-12 using clk 1
+ # Enable NVMe SSD PCIe 9-12 using clk 2
register "pch_pcie_rp[PCH_RP(9)]" = "{
.clk_src = 1,
- .clk_req = 1,
+ .clk_req = 2,
.flags = PCIE_RP_LTR | PCIE_RP_AER,
}"
end