zephyr: boards: support chip variants of it81202bx and it81302bx

We divide baseboard into it81202bx and it81302bx, which is convenient
for maintenance.

BUG=none
BRANCH=none
TEST=zmake build it8xxx2_evb --clobber
     zmake build krabby --clobber
     zmake build tentacruel --clobber
     zmake build nereid --clobber
     zmake build joxer --clobber
     zmake build minimal-it8xxx2 --clobber
TEST=zmake testall
TEST=Make sure gpiok(0xf01690-0xf01697) and gpiol(0xf01698-0xf0169f)
     group are set as input and pull-down in krabby project and do
     not be set in nereid project.

Change-Id: I5a12e9f97aef2ef14193491cfad46a6614969c8a
Signed-off-by: Tim Lin <tim2.lin@ite.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3650301
Commit-Queue: Dino Li <Dino.Li@ite.com.tw>
Tested-by: Dino Li <Dino.Li@ite.com.tw>
Reviewed-by: Andrew McRae <amcrae@google.com>
Reviewed-by: Keith Short <keithshort@chromium.org>

4 files changed, 52 insertions, 6 deletions

diff --git a/zephyr/boards/riscv/it8xxx2/it81202bx.dts b/zephyr/boards/riscv/it8xxx2/it81202bx.dts
new file mode 100644
index 0000000000..76080c0a80
--- /dev/null
+++ b/zephyr/boards/riscv/it8xxx2/it81202bx.dts
@@ -0,0 +1,8 @@
+/* Copyright 2022 The ChromiumOS Authors.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/dts-v1/;
+
+#include "it8xxx2.dts"
diff --git a/zephyr/boards/riscv/it8xxx2/it8xxx2_defconfig b/zephyr/boards/riscv/it8xxx2/it81202bx_defconfig
index 34612e9b42..59fc3a1eaf 100644
--- a/zephyr/boards/riscv/it8xxx2/it8xxx2_defconfig
+++ b/zephyr/boards/riscv/it8xxx2/it81202bx_defconfig
@@ -1,10 +1,11 @@
-# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Copyright 2022 The ChromiumOS Authors.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Zephyr Kernel Configuration
 CONFIG_SOC_SERIES_RISCV32_IT8XXX2=y
 CONFIG_SOC_IT8XXX2=y
+CONFIG_SOC_IT81202_BX=y
 
 # Platform Configuration
 CONFIG_BOARD_IT8XXX2=y
@@ -19,11 +20,6 @@ CONFIG_CONSOLE=y
 
 # GPIO Controller
 CONFIG_GPIO=y
-# For IT81202, the GPIO group k/l are not brought out to pins,
-# so by default they can be set to pull down inputs.
-# However with the IT81302, they are available on pins,
-# and should not be set to pull down inputs by default.
-CONFIG_SOC_IT8XXX2_GPIO_GROUP_K_L_DEFAULT_PULL_DOWN=n
 
 # Clock Controller
 CONFIG_CLOCK_CONTROL=n
diff --git a/zephyr/boards/riscv/it8xxx2/it81302bx.dts b/zephyr/boards/riscv/it8xxx2/it81302bx.dts
new file mode 100644
index 0000000000..76080c0a80
--- /dev/null
+++ b/zephyr/boards/riscv/it8xxx2/it81302bx.dts
@@ -0,0 +1,8 @@
+/* Copyright 2022 The ChromiumOS Authors.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/dts-v1/;
+
+#include "it8xxx2.dts"
diff --git a/zephyr/boards/riscv/it8xxx2/it81302bx_defconfig b/zephyr/boards/riscv/it8xxx2/it81302bx_defconfig
new file mode 100644
index 0000000000..ae66217f86
--- /dev/null
+++ b/zephyr/boards/riscv/it8xxx2/it81302bx_defconfig
@@ -0,0 +1,34 @@
+# Copyright 2022 The ChromiumOS Authors.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Zephyr Kernel Configuration
+CONFIG_SOC_SERIES_RISCV32_IT8XXX2=y
+CONFIG_SOC_IT8XXX2=y
+CONFIG_SOC_IT81302_BX=y
+
+# Platform Configuration
+CONFIG_BOARD_IT8XXX2=y
+
+# Power Management
+CONFIG_PM=y
+CONFIG_PM_DEVICE=y
+CONFIG_PM_POLICY_CUSTOM=y
+
+# Console
+CONFIG_CONSOLE=y
+
+# GPIO Controller
+CONFIG_GPIO=y
+
+# Clock Controller
+CONFIG_CLOCK_CONTROL=n
+
+# Serial Drivers
+CONFIG_SERIAL=y
+
+# WATCHDOG configuration
+CONFIG_WATCHDOG=y
+
+# BBRAM
+CONFIG_BBRAM=y