nissa: Add Nereid initial power signal configuration

Add power signal DTS configuration for Nereid.

Does not include ADC comparator support, which is
dependent on an upstreamed feature.

BUG=b:201000950
TEST=zmake configure -b nereid
BRANCH=none

Signed-off-by: Andrew McRae <amcrae@google.com>
Change-Id: I43f9f1279e47cc54022a4196440f11632869d6ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3499822

3 files changed, 195 insertions, 0 deletions

diff --git a/zephyr/projects/nissa/BUILD.py b/zephyr/projects/nissa/BUILD.py
index 58753ef9dc..41d56411d2 100644
--- a/zephyr/projects/nissa/BUILD.py
+++ b/zephyr/projects/nissa/BUILD.py
@@ -44,6 +44,7 @@ register_nissa_project(
         here / "nereid_overlay.dts",
         here / "nereid_motionsense.dts",
         here / "nereid_keyboard.dts",
+        here / "nereid_power_signals.dts",
     ],
     extra_kconfig_files=[here / "prj_nereid.conf"],
 )
diff --git a/zephyr/projects/nissa/nereid_power_signals.dts b/zephyr/projects/nissa/nereid_power_signals.dts
new file mode 100644
index 0000000000..95edfdddf5
--- /dev/null
+++ b/zephyr/projects/nissa/nereid_power_signals.dts
@@ -0,0 +1,190 @@
+/* Copyright 2022 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/ {
+	chosen {
+		intel-ap-pwrseq,espi = &espi0;
+	};
+
+	common-pwrseq {
+		compatible = "intel,ap-pwrseq";
+
+		sys-pwrok-delay = <10>;
+		all-sys-pwrgd-timeout = <20>;
+		pwrseq-espi-max-freq = <50>;
+	};
+
+	pwr-en-pp5000-s5 {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "PP5000_S5 enable output to regulator";
+		enum-name = "PWR_EN_PP5000_A";
+		gpios = <&gpiok 5 0>;
+		output;
+	};
+	pwr-en-pp3300-s5 {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "PP3300_S5 enable output to LS";
+		enum-name = "PWR_EN_PP3300_A";
+		gpios = <&gpioc 5 0>;
+		output;
+	};
+	pwr-pg-ec-rsmrst-odl {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "RSMRST power good from regulator";
+		enum-name = "PWR_RSMRST";
+		gpios = <&gpioe 1 0>;
+		interrupt-flags = <GPIO_INT_EDGE_BOTH>;
+	};
+	pwr-ec-pch-rsmrst-odl {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "RSMRST output to PCH";
+		enum-name = "PWR_EC_PCH_RSMRST";
+		gpios = <&gpioh 0 0>;
+		output;
+	};
+	pwr-slp-s0-l {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "SLP_S0_L input from PCH";
+		enum-name = "PWR_SLP_S0";
+		gpios = <&gpioe 4 GPIO_ACTIVE_LOW>;
+		interrupt-flags = <GPIO_INT_EDGE_BOTH>;
+	};
+	pwr-slp-s3-l {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "SLP_S3_L input from PCH";
+		enum-name = "PWR_SLP_S3";
+		gpios = <&gpioh 3 GPIO_ACTIVE_LOW>;
+		interrupt-flags = <GPIO_INT_EDGE_BOTH>;
+	};
+	pwr-slp-sus-l {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "SLP_SUS_L input from PCH";
+		enum-name = "PWR_SLP_SUS";
+		gpios = <&gpiog 2 GPIO_ACTIVE_LOW>;
+		interrupt-flags = <GPIO_INT_EDGE_BOTH>;
+	};
+	pwr-ec-soc-dsw-pwrok {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "DSW_PWROK output to PCH";
+		enum-name = "PWR_EC_SOC_DSW_PWROK";
+		gpios = <&gpiol 7 0>;
+		output;
+	};
+	pwr-vccst-pwrgd-od {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "VCCST_PWRGD output to PCH";
+		enum-name = "PWR_VCCST_PWRGD";
+		gpios = <&gpioe 5 GPIO_OPEN_DRAIN>;
+		output;
+	};
+	pwr-imvp9-vrrdy-od {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "VRRDY input from IMVP9";
+		enum-name = "PWR_IMVP9_VRRDY";
+		gpios = <&gpioj 4 0>;
+	};
+	pwr-pch-pwrok {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "PCH_PWROK output to PCH";
+		enum-name = "PWR_PCH_PWROK";
+		gpios = <&gpiod 6 GPIO_OPEN_DRAIN>;
+		output;
+	};
+	pwr-ec-pch-sys-pwrok {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "SYS_PWROK output to PCH";
+		enum-name = "PWR_EC_PCH_SYS_PWROK";
+		gpios = <&gpiof 2 0>;
+		output;
+	};
+	pwr-sys-rst-l {
+		compatible = "intel,ap-pwrseq-gpio";
+		dbg-label = "SYS_RESET# output to PCH";
+		enum-name = "PWR_SYS_RST";
+		gpios = <&gpiod 1 (GPIO_ACTIVE_LOW|GPIO_OPEN_DRAIN)>;
+		output;
+	};
+	pwr-slp-s4 {
+		compatible = "intel,ap-pwrseq-vw";
+		dbg-label = "SLP_S4 virtual wire input from PCH";
+		enum-name = "PWR_SLP_S4";
+		virtual-wire = "ESPI_VWIRE_SIGNAL_SLP_S4";
+		vw-invert;
+	};
+	pwr-slp-s5 {
+		compatible = "intel,ap-pwrseq-vw";
+		dbg-label = "SLP_S5 virtual wire input from PCH";
+		enum-name = "PWR_SLP_S5";
+		virtual-wire = "ESPI_VWIRE_SIGNAL_SLP_S5";
+		vw-invert;
+	};
+	pwr-all-sys-pwrgd {
+		/*
+		 * This is a board level signal, since this
+		 * signal needs some special processing.
+		 */
+		compatible = "intel,ap-pwrseq-external";
+		dbg-label = "Combined all power good";
+		enum-name = "PWR_ALL_SYS_PWRGD";
+	};
+	/*
+	 * TODO: Add ADC comparators
+	 * Temporary board based signals.
+	 */
+	pwr-dsw-pwrgd {
+		compatible = "intel,ap-pwrseq-external";
+		dbg-label = "ADC for 3.3V";
+		enum-name = "PWR_DSW_PWROK";
+	};
+	pwr-pg-pp1p05 {
+		compatible = "intel,ap-pwrseq-external";
+		dbg-label = "ADC for 1.05V";
+		enum-name = "PWR_PG_PP1P05";
+	};
+};
+
+/*
+ * Because the power signals directly reference the GPIOs,
+ * the correspinding named-gpios need to have no-auto-init set.
+ */
+&gpio_ec_soc_dsw_pwrok {
+	no-auto-init;
+};
+&gpio_ec_soc_pch_pwrok_od {
+	no-auto-init;
+};
+&gpio_ec_soc_rsmrst_l {
+	no-auto-init;
+};
+&gpio_ec_soc_sys_pwrok {
+	no-auto-init;
+};
+&gpio_ec_soc_vccst_pwrgd_od {
+	no-auto-init;
+};
+&gpio_en_pp3300_s5 {
+	no-auto-init;
+};
+&gpio_en_pp5000_s5 {
+	no-auto-init;
+};
+&gpio_imvp91_vrrdy_od {
+	no-auto-init;
+};
+&gpio_rsmrst_pwrgd_l {
+	no-auto-init;
+};
+&gpio_slp_s0_l {
+	no-auto-init;
+};
+&gpio_slp_s3_l {
+	no-auto-init;
+};
+&gpio_slp_sus_l {
+	no-auto-init;
+};
+&gpio_sys_rst_odl {
+	no-auto-init;
+};
diff --git a/zephyr/projects/nissa/prj_nereid.conf b/zephyr/projects/nissa/prj_nereid.conf
index 29a7073f38..8edfa56dd7 100644
--- a/zephyr/projects/nissa/prj_nereid.conf
+++ b/zephyr/projects/nissa/prj_nereid.conf
@@ -52,3 +52,7 @@ CONFIG_PLATFORM_EC_USB_PD_STARTUP_DELAY_MS=2000
 # Charger driver and configuration
 CONFIG_PLATFORM_EC_CHARGER_SM5803=y
 CONFIG_PLATFORM_EC_OCPC_DEF_RBATT_MOHMS=21
+# Power Sequence
+CONFIG_AP_PWRSEQ=y
+CONFIG_X86_NON_DSX_PWRSEQ_ADL=y
+CONFIG_X86_NON_DSX_PWRSEQ_CONSOLE=y