[PATCH v6 041/102] x86: Allow removal of standard PCH drivers

[Simon Glass]

These drivers are not needed on all platforms. While they are small, it
is useful in TPL to drop then. Add Kconfig control to allow this.

Signed-off-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---

Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2:
- Change 'queensbay' to 'baytrail' in help
- Fix 'proides' typo

 drivers/pch/Kconfig  | 18 ++++++++++++++++++
 drivers/pch/Makefile |  4 ++--
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/pch/Kconfig b/drivers/pch/Kconfig
index 18f006de24..c49a92885a 100644
--- a/drivers/pch/Kconfig
+++ b/drivers/pch/Kconfig
@@ -7,3 +7,21 @@ config PCH
 	  northbridge / southbridge architecture that was previously used. The
 	  PCH allows for higher performance since the memory functions are
 	  handled in the CPU.
+
+config X86_PCH7
+	bool "Add support for Intel PCH7"
+	default y if X86
+	help
+	  Enable this if your SoC uses Platform Controller Hub 7 (PCH7). This
+	  dates from about 2011 and is used on baytrail, for example. The
+	  PCH provides access to the GPIO and SPI base addresses, among other
+	  functions.
+
+config X86_PCH9
+	bool "Add support for Intel PCH9"
+	default y if X86
+	help
+	  Enable this if your SoC uses Platform Controller Hub 9 (PCH9). This
+	  dates from about 2015 and is used on baytrail, for example. The
+	  PCH provides access to the GPIO and SPI base addresses, among other
+	  functions.
diff --git a/drivers/pch/Makefile b/drivers/pch/Makefile
index 8ea6b7852a..d5de3e48be 100644
--- a/drivers/pch/Makefile
+++ b/drivers/pch/Makefile
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 
 obj-y += pch-uclass.o
-obj-y += pch7.o
-obj-y += pch9.o
+obj-$(CONFIG_X86_PCH7) += pch7.o
+obj-$(CONFIG_X86_PCH9) += pch9.o
 obj-$(CONFIG_SANDBOX) += sandbox_pch.o
-- 
2.24.0.393.g34dc348eaf-goog