Merge tag 'arm-soc/for-6.1/drivers' of https://github.com/Broadcom/stblinux into arm/drivers

This pull request contains Broadcom ARM/ARM64 SoC drivers updates for
6.1, please pull the following:

- Guilherme adds a comment to the panic notifier, part of his big panic
notifier rework series

- William migrates all of ARCH_BCM4908 dependencies to ARCH_BCMBCA

* tag 'arm-soc/for-6.1/drivers' of https://github.com/Broadcom/stblinux:
  arm64: bcmbca: Make BCM4908 drivers depend on ARCH_BCMBCA
  soc: bcm: brcmstb: Document panic notifier action and remove useless header

Link: https://lore.kernel.org/r/20220915023044.2350782-4-f.fainelli@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

11 files changed, 32 insertions, 20 deletions

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 7284206b278b..0c48d8a9f44a 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -488,8 +488,8 @@ config I2C_BCM_KONA
 
 config I2C_BRCMSTB
 	tristate "BRCM Settop/DSL I2C controller"
-	depends on ARCH_BCM2835 || ARCH_BCM4908 || ARCH_BCMBCA || \
-		   ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
+	depends on ARCH_BCM2835 || ARCH_BCMBCA || ARCH_BRCMSTB || \
+		   BMIPS_GENERIC || COMPILE_TEST
 	default y
 	help
 	  If you say yes to this option, support will be included for the
diff --git a/drivers/mtd/parsers/Kconfig b/drivers/mtd/parsers/Kconfig
index b43df73927a0..d6db655a1d24 100644
--- a/drivers/mtd/parsers/Kconfig
+++ b/drivers/mtd/parsers/Kconfig
@@ -69,8 +69,8 @@ config MTD_OF_PARTS
 
 config MTD_OF_PARTS_BCM4908
 	bool "BCM4908 partitioning support"
-	depends on MTD_OF_PARTS && (ARCH_BCM4908 || COMPILE_TEST)
-	default ARCH_BCM4908
+	depends on MTD_OF_PARTS && (ARCH_BCMBCA || COMPILE_TEST)
+	default ARCH_BCMBCA
 	help
 	  This provides partitions parser for BCM4908 family devices
 	  that can have multiple "firmware" partitions. It takes care of
@@ -78,7 +78,7 @@ config MTD_OF_PARTS_BCM4908
 
 config MTD_OF_PARTS_LINKSYS_NS
 	bool "Linksys Northstar partitioning support"
-	depends on MTD_OF_PARTS && (ARCH_BCM_5301X || ARCH_BCM4908 || COMPILE_TEST)
+	depends on MTD_OF_PARTS && (ARCH_BCM_5301X || ARCH_BCMBCA || COMPILE_TEST)
 	default ARCH_BCM_5301X
 	help
 	  This provides partitions parser for Linksys devices based on Broadcom
diff --git a/drivers/net/ethernet/broadcom/Kconfig b/drivers/net/ethernet/broadcom/Kconfig
index 56e0fb07aec7..f4e1ca68d831 100644
--- a/drivers/net/ethernet/broadcom/Kconfig
+++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -53,8 +53,8 @@ config B44_PCI
 
 config BCM4908_ENET
 	tristate "Broadcom BCM4908 internal mac support"
-	depends on ARCH_BCM4908 || COMPILE_TEST
-	default y if ARCH_BCM4908
+	depends on ARCH_BCMBCA || COMPILE_TEST
+	default y if ARCH_BCMBCA
 	help
 	  This driver supports Ethernet controller integrated into Broadcom
 	  BCM4908 family SoCs.
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
index d1c5fcf00a8a..bfd9bac37e24 100644
--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -274,7 +274,7 @@ config VMD
 
 config PCIE_BRCMSTB
 	tristate "Broadcom Brcmstb PCIe host controller"
-	depends on ARCH_BRCMSTB || ARCH_BCM2835 || ARCH_BCM4908 || \
+	depends on ARCH_BRCMSTB || ARCH_BCM2835 || ARCH_BCMBCA || \
 		   BMIPS_GENERIC || COMPILE_TEST
 	depends on OF
 	depends on PCI_MSI_IRQ_DOMAIN
diff --git a/drivers/phy/broadcom/Kconfig b/drivers/phy/broadcom/Kconfig
index 93a6a8ee4716..1d89a2fd9b79 100644
--- a/drivers/phy/broadcom/Kconfig
+++ b/drivers/phy/broadcom/Kconfig
@@ -93,11 +93,11 @@ config PHY_BRCM_SATA
 
 config PHY_BRCM_USB
 	tristate "Broadcom STB USB PHY driver"
-	depends on ARCH_BCM4908 || ARCH_BRCMSTB || COMPILE_TEST
+	depends on ARCH_BCMBCA || ARCH_BRCMSTB || COMPILE_TEST
 	depends on OF
 	select GENERIC_PHY
 	select SOC_BRCMSTB if ARCH_BRCMSTB
-	default ARCH_BCM4908 || ARCH_BRCMSTB
+	default ARCH_BCMBCA || ARCH_BRCMSTB
 	help
 	  Enable this to support the Broadcom STB USB PHY.
 	  This driver is required by the USB XHCI, EHCI and OHCI
diff --git a/drivers/pinctrl/bcm/Kconfig b/drivers/pinctrl/bcm/Kconfig
index 8f4d89806fcb..35b51ce4298e 100644
--- a/drivers/pinctrl/bcm/Kconfig
+++ b/drivers/pinctrl/bcm/Kconfig
@@ -31,13 +31,13 @@ config PINCTRL_BCM2835
 
 config PINCTRL_BCM4908
 	tristate "Broadcom BCM4908 pinmux driver"
-	depends on OF && (ARCH_BCM4908 || COMPILE_TEST)
+	depends on OF && (ARCH_BCMBCA || COMPILE_TEST)
 	select PINMUX
 	select PINCONF
 	select GENERIC_PINCONF
 	select GENERIC_PINCTRL_GROUPS
 	select GENERIC_PINMUX_FUNCTIONS
-	default ARCH_BCM4908
+	default ARCH_BCMBCA
 	help
 	  Driver for BCM4908 family SoCs with integrated pin controller.
 
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 806773e88832..2a8238eb8794 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -201,7 +201,7 @@ config RESET_SCMI
 
 config RESET_SIMPLE
 	bool "Simple Reset Controller Driver" if COMPILE_TEST || EXPERT
-	default ARCH_ASPEED || ARCH_BCM4908 || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || (ARCH_INTEL_SOCFPGA && ARM64) || ARCH_SUNXI || ARC
+	default ARCH_ASPEED || ARCH_BCMBCA || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || (ARCH_INTEL_SOCFPGA && ARM64) || ARCH_SUNXI || ARC
 	depends on HAS_IOMEM
 	help
 	  This enables a simple reset controller driver for reset lines that
diff --git a/drivers/soc/bcm/bcm63xx/Kconfig b/drivers/soc/bcm/bcm63xx/Kconfig
index 9e501c8ac5ce..355c34482076 100644
--- a/drivers/soc/bcm/bcm63xx/Kconfig
+++ b/drivers/soc/bcm/bcm63xx/Kconfig
@@ -13,8 +13,8 @@ endif # SOC_BCM63XX
 
 config BCM_PMB
 	bool "Broadcom PMB (Power Management Bus) driver"
-	depends on ARCH_BCM4908 || (COMPILE_TEST && OF)
-	default ARCH_BCM4908
+	depends on ARCH_BCMBCA || (COMPILE_TEST && OF)
+	default ARCH_BCMBCA
 	select PM_GENERIC_DOMAINS if PM
 	help
 	  This enables support for the Broadcom's PMB (Power Management Bus) that
diff --git a/drivers/soc/bcm/brcmstb/pm/pm-arm.c b/drivers/soc/bcm/brcmstb/pm/pm-arm.c
index d6b30d521307..7643c9ade888 100644
--- a/drivers/soc/bcm/brcmstb/pm/pm-arm.c
+++ b/drivers/soc/bcm/brcmstb/pm/pm-arm.c
@@ -25,7 +25,6 @@
 #include <linux/kernel.h>
 #include <linux/memblock.h>
 #include <linux/module.h>
-#include <linux/notifier.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/panic_notifier.h>
@@ -664,7 +663,20 @@ static void __iomem *brcmstb_ioremap_match(const struct of_device_id *matches,
 
 	return of_io_request_and_map(dn, index, dn->full_name);
 }
-
+/*
+ * The AON is a small domain in the SoC that can retain its state across
+ * various system wide sleep states and specific reset conditions; the
+ * AON DATA RAM is a small RAM of a few words (< 1KB) which can store
+ * persistent information across such events.
+ *
+ * The purpose of the below panic notifier is to help with notifying
+ * the bootloader that a panic occurred and so that it should try its
+ * best to preserve the DRAM contents holding that buffer for recovery
+ * by the kernel as opposed to wiping out DRAM clean again.
+ *
+ * Reference: comment from Florian Fainelli, at
+ * https://lore.kernel.org/lkml/781cafb0-8d06-8b56-907a-5175c2da196a@gmail.com
+ */
 static int brcmstb_pm_panic_notify(struct notifier_block *nb,
 		unsigned long action, void *data)
 {
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 877173907c53..ba4b63fd511e 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1083,8 +1083,8 @@ config SERIAL_TIMBERDALE
 config SERIAL_BCM63XX
 	tristate "Broadcom BCM63xx/BCM33xx UART support"
 	select SERIAL_CORE
-	depends on ARCH_BCM4908 || ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
-	default ARCH_BCM4908 || ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC
+	depends on ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
+	default ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC
 	help
 	  This enables the driver for the onchip UART core found on
 	  the following chipsets:
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 9295492d24f7..688922fc4edb 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1799,7 +1799,7 @@ config BCM7038_WDT
 	tristate "BCM63xx/BCM7038 Watchdog"
 	select WATCHDOG_CORE
 	depends on HAS_IOMEM
-	depends on ARCH_BCM4908 || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
+	depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
 	help
 	  Watchdog driver for the built-in hardware in Broadcom 7038 and
 	  later SoCs used in set-top boxes.  BCM7038 was made public