pci: Add support for p2sb uclass
The Primary-to-Sideband bus (P2SB) is used to access various peripherals
through memory-mapped I/O in a large chunk of PCI space. The space is
segmented into different channels and peripherals are accessed by
device-specific means within those channels. Devices should be added in
the device tree as subnodes of the p2sb.
This adds a uclass and enables it for sandbox.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 82bb093..71643af 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -226,6 +226,39 @@
disable the legacy UART, the watchdog or other devices
in the Nuvoton Super IO chips on X86 platforms.
+config P2SB
+ bool "Intel Primary-to-Sideband Bus"
+ depends on X86 || SANDBOX
+ help
+ This enables support for the Intel Primary-to-Sideband bus,
+ abbreviated to P2SB. The P2SB is used to access various peripherals
+ such as eSPI, GPIO, through memory-mapped I/O in a large chunk of PCI
+ space. The space is segmented into different channels and peripherals
+ are accessed by device-specific means within those channels. Devices
+ should be added in the device tree as subnodes of the P2SB. A
+ Peripheral Channel Register? (PCR) API is provided to access those
+ devices - see pcr_readl(), etc.
+
+config SPL_P2SB
+ bool "Intel Primary-to-Sideband Bus in SPL"
+ depends on SPL && (X86 || SANDBOX)
+ help
+ The Primary-to-Sideband bus is used to access various peripherals
+ through memory-mapped I/O in a large chunk of PCI space. The space is
+ segmented into different channels and peripherals are accessed by
+ device-specific means within those channels. Devices should be added
+ in the device tree as subnodes of the p2sb.
+
+config TPL_P2SB
+ bool "Intel Primary-to-Sideband Bus in TPL"
+ depends on TPL && (X86 || SANDBOX)
+ help
+ The Primary-to-Sideband bus is used to access various peripherals
+ through memory-mapped I/O in a large chunk of PCI space. The space is
+ segmented into different channels and peripherals are accessed by
+ device-specific means within those channels. Devices should be added
+ in the device tree as subnodes of the p2sb.
+
config PWRSEQ
bool "Enable power-sequencing drivers"
depends on DM