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authorKangheui Won <khwon@chromium.org>2019-12-11 17:29:47 +1100
committerEdward O'Callaghan <quasisec@chromium.org>2019-12-24 23:37:20 +0000
commit60889e55ea0076f442833e0bfc94fe828bb5d4b3 (patch)
tree8d300773c7d2319a8c08dcbdc4a869f8c397057e /src/mainboard/google
parent028570b4453a3b9328ca953eaf77f097c6ed851e (diff)
downloadcoreboot-60889e55ea0076f442833e0bfc94fe828bb5d4b3.tar.xz
mainboard/variant/puff: set PL values for puff
To be safe for now, don't differentiate between SKUs and use lower values to ensure board won't be browned out. BUG=b:143246320 TEST=none BRANCH=none Change-Id: I041ebaa33bf2582386198290e625099ba8e2f3c9 Signed-off-by: Kangheui Won <khwon@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37651 Reviewed-by: Edward O'Callaghan <quasisec@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google')
-rw-r--r--src/mainboard/google/hatch/ramstage.c6
-rw-r--r--src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h3
-rw-r--r--src/mainboard/google/hatch/variants/puff/Makefile.inc1
-rw-r--r--src/mainboard/google/hatch/variants/puff/mainboard.c90
4 files changed, 100 insertions, 0 deletions
diff --git a/src/mainboard/google/hatch/ramstage.c b/src/mainboard/google/hatch/ramstage.c
index e84aa1861b..e4de3a2174 100644
--- a/src/mainboard/google/hatch/ramstage.c
+++ b/src/mainboard/google/hatch/ramstage.c
@@ -36,6 +36,11 @@ void __weak variant_ramstage_init(void)
/* Default weak implementation */
}
+void __weak variant_mainboard_enable(struct device *dev)
+{
+ /* Override mainboard settings per board */
+}
+
static void mainboard_init(struct device *dev)
{
mainboard_ec_init();
@@ -45,6 +50,7 @@ static void mainboard_enable(struct device *dev)
{
dev->ops->init = mainboard_init;
dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
+ variant_mainboard_enable(dev);
}
static void mainboard_chip_init(void *chip_info)
diff --git a/src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h
index 1542d9bc54..9d1b91e0c7 100644
--- a/src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h
@@ -53,4 +53,7 @@ void variant_devtree_update(void);
/* Perform variant specific initialization early on in ramstage. */
void variant_ramstage_init(void);
+/* Perform variant specific mainboard initialization */
+void variant_mainboard_enable(struct device *dev);
+
#endif /* BASEBOARD_VARIANTS_H */
diff --git a/src/mainboard/google/hatch/variants/puff/Makefile.inc b/src/mainboard/google/hatch/variants/puff/Makefile.inc
index 30daaf7f0c..2d1440e3ac 100644
--- a/src/mainboard/google/hatch/variants/puff/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/puff/Makefile.inc
@@ -13,4 +13,5 @@
##
ramstage-y += gpio.c
+ramstage-y += mainboard.c
bootblock-y += gpio.c
diff --git a/src/mainboard/google/hatch/variants/puff/mainboard.c b/src/mainboard/google/hatch/variants/puff/mainboard.c
new file mode 100644
index 0000000000..9c2b5fb033
--- /dev/null
+++ b/src/mainboard/google/hatch/variants/puff/mainboard.c
@@ -0,0 +1,90 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2019 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <baseboard/variants.h>
+#include <chip.h>
+#include <device/device.h>
+#include <ec/google/chromeec/ec.h>
+
+/*
+ * 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.
+ */
+#define SET_PSYSPL2(w) (9 * (w) / 10)
+
+#define PUFF_PL2 (35)
+
+#define PUFF_PSYSPL2 (58)
+
+#define PUFF_MAX_TIME_WINDOW 6
+#define PUFF_MIN_DUTYCYCLE 4
+
+/*
+ * mainboard_set_power_limits
+ *
+ * Set Pl2 and SysPl2 values based on detected charger.
+ * Values are defined below but we use U22 value for all SKUs for now.
+ * definitions:
+ * x = no value entered. Use default value in parenthesis.
+ * will set 0 to anything that shouldn't be set.
+ * n = max value of power adapter.
+ * +-------------+-----+---------+-----------+-------+
+ * | sku_id | PL2 | PsysPL2 | PsysPL3 | PL4 |
+ * +-------------+-----+---------+-----------+-------+
+ * | i7 U42 | 51 | 81 | x(.85PL4) | x(82) |
+ * | celeron U22 | 35 | 58 | x(.85PL4) | x(51) |
+ * +-------------+-----+---------+-----------+-------+
+ * For USB C charger:
+ * +-------------+-----+---------+---------+-------+
+ * | Max Power(W)| PL2 | PsysPL2 | PsysPL3 | PL4 |
+ * +-------------+-----+---------+---------+-------+
+ * | 60 (U42) | 44 | 54 | 54 | 54 |
+ * | 60 (U22) | 29 | 54 | 54 | x(43) |
+ * | n (U42) | 44 | .9n | .9n | .9n |
+ * | n (U22) | 29 | .9n | .9n | x(43) |
+ * +-------------+-----+---------+---------+-------+
+ */
+static void mainboard_set_power_limits(config_t *conf)
+{
+ enum usb_chg_type type;
+ u32 watts;
+ u32 psyspl2 = PUFF_PSYSPL2; // default barrel jack value for U22
+ int rv = google_chromeec_get_usb_pd_power_info(&type, &watts);
+
+ /* use SoC default value for PsysPL3 and PL4 unless we're on USB-PD*/
+ conf->tdp_psyspl3 = 0;
+ conf->tdp_pl4 = 0;
+
+ if (rv == 0 && type == USB_CHG_TYPE_PD) {
+ /* Detected USB-PD. Base on max value of adapter */
+ psyspl2 = watts;
+ conf->tdp_psyspl3 = SET_PSYSPL2(psyspl2);
+ /* set max possible time window */
+ conf->tdp_psyspl3_time = PUFF_MAX_TIME_WINDOW;
+ /* set minimum duty cycle */
+ conf->tdp_psyspl3_dutycycle = PUFF_MIN_DUTYCYCLE;
+ conf->tdp_pl4 = SET_PSYSPL2(psyspl2);
+ }
+
+ conf->tdp_pl2_override = PUFF_PL2;
+ /* set psyspl2 to 90% of max adapter power */
+ conf->tdp_psyspl2 = SET_PSYSPL2(psyspl2);
+}
+
+void variant_mainboard_enable(struct device *dev)
+{
+ config_t *conf = config_of_soc();
+ mainboard_set_power_limits(conf);
+}