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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-10-06 21:04:57 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-10-06 21:04:57 +0300 |
commit | ff6862c23d2e83d12d1759bf4337d41248fb4dc8 (patch) | |
tree | 36d499d2b2f807cd5c197267272fb310a4b0729a /drivers/soc/bcm | |
parent | 40285e64c5654c956505dad34ed2ee4be163b1f0 (diff) | |
parent | 4413794917ba3ff42ade432870248b500253f152 (diff) | |
download | linux-ff6862c23d2e83d12d1759bf4337d41248fb4dc8.tar.xz |
Merge tag 'arm-drivers-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM driver updates from Arnd Bergmann:
"The drivers branch for 6.1 is a bit larger than for most releases.
Most of the changes come from SoC maintainers for the drivers/soc
subsystem:
- A new driver for error handling on the NVIDIA Tegra 'control
backbone' bus.
- A new driver for Qualcomm LLCC/DDR bandwidth measurement
- New Rockchip rv1126 and rk3588 power domain drivers
- DT binding updates for memory controllers, older Rockchip SoCs,
various Mediatek devices, Qualcomm SCM firmware
- Minor updates to Hisilicon LPC bus, the Allwinner SRAM driver, the
Apple rtkit firmware driver, Tegra firmware
- Minor updates for SoC drivers (Samsung, Mediatek, Renesas, Tegra,
Qualcomm, Broadcom, NXP, ...)
There are also some separate subsystem with downstream maintainers
that merge updates this way:
- Various updates and new drivers in the memory controller subsystem
for Mediatek and Broadcom SoCs
- Small set of changes in preparation to add support for FF-A v1.1
specification later, in the Arm FF-A firmware subsystem
- debugfs support in the PSCI firmware subsystem"
* tag 'arm-drivers-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (149 commits)
ARM: remove check for CONFIG_DEBUG_LL_SER3
firmware/psci: Add debugfs support to ease debugging
firmware/psci: Print a warning if PSCI doesn't accept PC mode
dt-bindings: memory: snps,dw-umctl2-ddrc: Extend schema with IRQs/resets/clocks props
dt-bindings: memory: snps,dw-umctl2-ddrc: Replace opencoded numbers with macros
dt-bindings: memory: snps,dw-umctl2-ddrc: Use more descriptive device name
dt-bindings: memory: synopsys,ddrc-ecc: Detach Zynq DDRC controller support
soc: sunxi: sram: Add support for the D1 system control
soc: sunxi: sram: Export the LDO control register
soc: sunxi: sram: Save a pointer to the OF match data
soc: sunxi: sram: Return void from the release function
soc: apple: rtkit: Add apple_rtkit_poll
soc: imx: add i.MX93 media blk ctrl driver
soc: imx: add i.MX93 SRC power domain driver
soc: imx: imx8m-blk-ctrl: Use genpd_xlate_onecell
soc: imx: imx8mp-blk-ctrl: handle PCIe PHY resets
soc: imx: imx8m-blk-ctrl: add i.MX8MP VPU blk ctrl
soc: imx: add i.MX8MP HDMI blk ctrl HDCP/HRV_MWR
soc: imx: add icc paths for i.MX8MP hsio/hdmi blk ctrl
soc: imx: add icc paths for i.MX8MP media blk ctrl
...
Diffstat (limited to 'drivers/soc/bcm')
-rw-r--r-- | drivers/soc/bcm/bcm63xx/Kconfig | 4 | ||||
-rw-r--r-- | drivers/soc/bcm/brcmstb/pm/pm-arm.c | 16 |
2 files changed, 16 insertions, 4 deletions
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 775da69b8efa..d681cd24c6e1 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) { |