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soc/amd/picasso: don't apply unconfigured USB2 PHY tune parameters

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Since FSP pre-populates the UPD struct with the non-zero default values,
coreboot shouldn't set them to zero in the case that they aren't
configured in the board's devicetree. Since all parameters being zero is
a valid case, this patch adds another devicetree option that applying
the devicetree settings for the USB2 PHY tuning depends on being set.

BUG=b:161923068

Change-Id: I66e5811ce64298b0644d2881420634a8ce1379d7
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43781
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Felix Held
2020-07-23 19:37:42 +02:00
parent c4d4b54314
commit 1d0154cee0
4 changed files with 13 additions and 7 deletions
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2
src/soc/amd/picasso/chip.h
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@@ -133,13 +133,13 @@ struct soc_amd_picasso_config {
uint8_t xhci0_force_gen1;
uint8_t has_usb2_phy_tune_params;
struct usb2_phy_tune usb_2_port_0_tune_params;
struct usb2_phy_tune usb_2_port_1_tune_params;
struct usb2_phy_tune usb_2_port_2_tune_params;
struct usb2_phy_tune usb_2_port_3_tune_params;
struct usb2_phy_tune usb_2_port_4_tune_params;
struct usb2_phy_tune usb_2_port_5_tune_params;
};
typedef struct soc_amd_picasso_config config_t;