From 750ec9431470912124b899cbea2ed7f275af4647 Mon Sep 17 00:00:00 2001 From: Shelley Chen Date: Mon, 8 Jan 2018 18:24:03 -0800 Subject: google/fizz: Dynamically set PsysPl2 MSR if using type-C charger If using type-C charger, then PsysPl2 may be lower than barrel jack value of 90W, so need to override value to the max power of type-C charger. BUG=b:71594855 BRANCH=None TEST=Make sure that PsysPL2 value set to 60W with zinger, but 90W when using proper barrel jack adapter on and i7. Change-Id: If955b9af0e23f47719f001f1d73ec37113937cea Signed-off-by: Shelley Chen Reviewed-on: https://review.coreboot.org/23182 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin Reviewed-by: Furquan Shaikh --- src/mainboard/google/fizz/mainboard.c | 28 ++++++++++++++++------------ 1 file changed, 16 insertions(+), 12 deletions(-) (limited to 'src/mainboard/google/fizz') diff --git a/src/mainboard/google/fizz/mainboard.c b/src/mainboard/google/fizz/mainboard.c index 98c00782f7..8bdab22d63 100644 --- a/src/mainboard/google/fizz/mainboard.c +++ b/src/mainboard/google/fizz/mainboard.c @@ -31,6 +31,7 @@ #define FIZZ_SKU_ID_I7_U42 0x4 #define FIZZ_PL2_I7_U42 44 #define FIZZ_PL2_OTHERS 29 +#define FIZZ_PSYSPL2_ALL 90 /* * For type-C chargers, set PL2 to 90% of max power to account for * cable loss and FET Rdson loss in the path from the source. @@ -96,30 +97,33 @@ static uint8_t board_sku_id(void) } /* - * mainboard_get_pl2 + * mainboard_set_power_limits * - * @return value Pl2 should be set to - * - * Check if charger is USB C. If so, set to 90% of the max value. - * Otherwise, set PL2 based on sku id. + * Set Pl2 and SysPl2 values based on detected charger. */ -static u32 mainboard_get_pl2(void) +static void mainboard_set_power_limits(u32 *pl2_val, u32 *psyspl2_val) { enum usb_chg_type type; u32 watts; + u32 pl2, psyspl2; int rv = google_chromeec_get_usb_pd_power_info(&type, &watts); /* If we can't get charger info or not PD charger, assume barrel jack */ if (rv != 0 || type != USB_CHG_TYPE_PD) { /* using the barrel jack, get PL2 based on sku id */ - watts = FIZZ_PL2_OTHERS; + pl2 = FIZZ_PL2_OTHERS; if (board_sku_id() == FIZZ_SKU_ID_I7_U42) - watts = FIZZ_PL2_I7_U42; - } else - watts = GET_TYPEC_PL2(watts); + pl2 = FIZZ_PL2_I7_U42; + /* PsysPl2 same for all SKUs */ + psyspl2 = FIZZ_PSYSPL2_ALL; + } else { + pl2 = GET_TYPEC_PL2(watts); + psyspl2 = watts; + } - return watts; + *pl2_val = pl2; + *psyspl2_val = psyspl2; } static uint8_t board_oem_id(void) @@ -210,7 +214,7 @@ static void mainboard_enable(device_t dev) device_t root = SA_DEV_ROOT; config_t *conf = root->chip_info; - conf->tdp_pl2_override = mainboard_get_pl2(); + mainboard_set_power_limits(&conf->tdp_pl2_override, &conf->tdp_psyspl2); set_bj_adapter_limit(); -- cgit v1.2.3