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alistair23-linux/arch/arm
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Stephen Warren cbe53807a1 ARM: tegra: Enable PLLP bypass during Tegra124 LP1 
commit 1a3388d506 upstream.

For a little over a year, U-Boot has configured the flow controller to
perform automatic RAM re-repair on off->on power transitions of the CPU
rail[1]. This is mandatory for correct operation of Tegra124. However,
RAM re-repair relies on certain clocks, which the kernel must enable and
leave running. PLLP is one of those clocks. This clock is shut down
during LP1 in order to save power. Enable bypass (which I believe routes
osc_div_clk, essentially the crystal clock, to the PLL output) so that
this clock signal toggles even though the PLL is not active. This is
required so that LP1 power mode (system suspend) operates correctly.

The bypass configuration must then be undone when resuming from LP1, so
that all peripheral clocks run at the expected rate. Without this, many
peripherals won't work correctly; for example, the UART baud rate would
be incorrect.

NVIDIA's downstream kernel code only does this if not compiled for
Tegra30, so the added code is made conditional upon the chip ID.
NVIDIA's downstream code makes this change conditional upon the active
CPU cluster. The upstream kernel currently doesn't support cluster
switching, so this patch doesn't test the active CPU cluster ID.

[1] 3cc7942a4ae5 ARM: tegra: implement RAM repair

Reported-by: Jonathan Hunter <jonathanh@nvidia.com>
Cc: stable@vger.kernel.org
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:35:34 -08:00
..
boot ARM: dts: am43x-epos-evm: set data pin directions for spi0 and spi1 2020-02-05 21:22:50 +00:00
common ARM: scoop: Use the right include 2019-09-03 22:09:46 +02:00
configs ARM: config: aspeed-g5: Enable 8250_DW quirks 2020-02-01 09:34:49 +00:00
crypto crypto: arm/aes-ce - add dependency on AES library 2019-10-01 23:06:43 +10:00
include KVM: arm64: Only sign-extend MMIO up to register width 2020-02-11 04:35:16 -08:00
kernel ARM: 8955/1: virt: Relax arch timer version check during early boot 2020-02-05 21:22:49 +00:00
kvm kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj) 2019-09-04 23:12:50 +09:00
lib Merge branch 'misc' into fixes 2019-10-22 17:37:29 +01:00
mach-actions treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mach-alpine treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
mach-artpec treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-asm9260 treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mach-aspeed ARM: SoC fixes 2019-09-30 10:04:28 -07:00
mach-at91 ARM: at91: move platform-specific asm-offset.h to arch/arm/mach-at91 2019-08-23 21:50:10 +02:00
mach-axxia treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-bcm ARM: SoC platform updates 2019-07-19 17:05:08 -07:00
mach-berlin treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mach-clps711x treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mach-cns3xxx treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 418 2019-06-05 17:37:15 +02:00
mach-davinci ARM: davinci: select CONFIG_RESET_CONTROLLER 2020-01-23 08:22:32 +01:00
mach-digicolor treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-dove ARM: orion/mvebu: unify debug-ll virtual addresses 2019-08-14 19:24:58 +02:00
mach-ebsa110 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-efm32 treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mach-ep93xx Merge branch 'spi-5.4' into spi-next 2019-09-15 10:32:06 +01:00
mach-exynos ARM: exynos: Enable support for ARM architected timers 2019-09-09 20:56:43 +02:00
mach-footbridge treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-gemini treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mach-highbank ARM: SoC platform updates 2019-07-19 17:05:08 -07:00
mach-hisi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-imx ARM: imx: stop adjusting ar8031 phy tx delay 2019-08-24 20:30:22 +02:00
mach-integrator treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-iop32x ARM: iop32x: merge everything into mach-iop32x/ 2019-08-14 15:36:22 +02:00
mach-ixp4xx docs: arm: convert docs to ReST and rename to *.rst 2019-07-15 09:20:24 -03:00
mach-keystone ARM: SoC platform updates 2019-07-19 17:05:08 -07:00
mach-lpc18xx treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mach-lpc32xx ARM: lpc32xx: allow multiplatform build 2019-08-15 21:34:08 +02:00
mach-mediatek treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
mach-meson treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
mach-milbeaut treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mach-mmp irqchip/mmp: Mask off interrupts from other cores 2019-08-30 15:23:30 +01:00
mach-moxart treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
mach-mv78xx0 ARM: orion/mvebu: unify debug-ll virtual addresses 2019-08-14 19:24:58 +02:00
mach-mvebu treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 406 2019-06-05 17:37:13 +02:00
mach-mxs treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-nomadik treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
mach-npcm treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mach-nspire ARM: mach-nspire: Kill off CLCD auxdata 2019-08-13 15:48:23 +02:00
mach-omap1 Merge branch 'asoc-5.3' into asoc-linus 2019-09-09 14:55:18 +01:00
mach-omap2 hwrng: omap3-rom - Fix missing clock by probing with device tree 2020-01-26 10:01:03 +01:00
mach-orion5x ARM: orion/mvebu: unify debug-ll virtual addresses 2019-08-14 19:24:58 +02:00
mach-oxnas treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-picoxcell treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-prima2 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4 2019-05-21 11:28:40 +02:00
mach-pxa ARM: SoC platform updates 2019-07-19 17:05:08 -07:00
mach-qcom treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-rda treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mach-realview treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-rockchip Another missing of_node_put 2019-06-17 05:14:24 -07:00
mach-rpc ARM: riscpc: Mark expected switch fall-through 2019-08-20 19:42:48 -05:00
mach-s3c24xx docs: arm: convert docs to ReST and rename to *.rst 2019-07-15 09:20:24 -03:00
mach-s3c64xx ARM: s3c64xx: squash samsung_usb_phy.h into setup-usb-phy.c 2019-08-21 19:50:40 +02:00
mach-s5pv210
mach-sa1100 ARM: SoC platform updates 2019-07-19 17:05:08 -07:00
mach-shmobile ARM: mach-shmobile: Don't init CNTVOFF/counter if PSCI is available 2019-05-31 11:38:01 +02:00
mach-socfpga treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-spear treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-sti treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-stm32 ARM: SoC platform updates 2019-07-19 17:05:08 -07:00
mach-sunxi ARM: sunxi: Fix CPU powerdown on A83T 2019-10-29 09:09:56 +01:00
mach-tango ARM: use arch_extension directive instead of arch argument 2019-06-19 09:44:25 -07:00
mach-tegra ARM: tegra: Enable PLLP bypass during Tegra124 LP1 2020-02-11 04:35:34 -08:00
mach-u300 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
mach-uniphier
mach-ux500 ARM: ux500: Stop populating the PRCMU devices early 2019-07-23 09:17:06 +02:00
mach-versatile Versatile platform updates for the v5.3 kernel cycle: 2019-06-17 05:11:53 -07:00
mach-vexpress ARM: vexpress: Set-up shared OPP table instead of individual for each CPU 2020-01-12 12:21:17 +01:00
mach-vt8500 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
mach-zx treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mach-zynq ARM: zynq: Use memcpy_toio instead of memcpy on smp bring-up 2019-08-14 09:40:43 +02:00
mm ARM: dma-api: fix max_pfn off-by-one error in __dma_supported() 2020-02-11 04:35:25 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-17 20:20:36 -07:00
nwfpe treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
oprofile
plat-omap ARM: OMAP: dma: Mark expected switch fall-throughs 2019-08-13 04:53:37 -07:00
plat-orion treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
plat-pxa treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
plat-samsung ARM: samsung: Fix system restart on S3C6410 2019-09-09 20:54:35 +02:00
plat-versatile treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
probes treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
tools docs: arm: convert docs to ReST and rename to *.rst 2019-07-15 09:20:24 -03:00
vdso kbuild: add --hash-style= and --build-id unconditionally 2019-07-17 22:37:51 +09:00
vfp treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
xen xen: fixes and cleanups for 5.4-rc2 2019-10-04 11:13:09 -07:00
Kconfig arm: Implement copy_thread_tls 2020-01-14 20:08:34 +01:00
Kconfig-nommu
Kconfig.debug ARM updates for 5.4-rc1: 2019-09-22 09:39:09 -07:00
Makefile ARM updates for 5.4-rc1: 2019-09-22 09:39:09 -07:00