This moves four entire boards to use a live device tree as an example of
the impact.
Nyan-big was chosen because I can easily and boot U-Boot without any
media swapping, etc. Beaver is enabled as well since it failed to boot
with serial v1 due to a disabled console node. Jetson-TK1 is chosen
because I found some USB problems in the v2 patches. Jetson-TX1 is added
because Stephen Warren found some problems with PCI.
Total code size impact on this board is approximately 9KB on U-Boot and
64 bytes on SPL:
27: dm: tegra: nyan-big: Move to livetree
arm: (for 1/1 boards) all +9264.0 bss -16.0 data +44.0 rodata +92.0
spl/u-boot-spl:all +326.0 spl/u-boot-spl:rodata +262.0
spl/u-boot-spl:text +64.0 text +9144.0
Tegra does not use Thumb2, which would likely reduce the code size by about
25%, indicating a code-size impact of perhaps 7KB.
Boot time is affected slightly. For nyan-big the times with flat tree are:
2,108 dm_r
7,924 dm_spl
120,724 dm_f
171,816 lcd
With the livetree:
721 dm_r
3,764 of_live
7,990 dm_spl
120,736 dm_f
168,215 lcd
As expected the spl and pre-relocation times are not affected. In the
post-relocation case, the live tree must be built, which here takes about
3.8ms. Driver-model device creation takes a bit of 1ms less time with the
livetree, so all up the cost is about 2.4ms. After DM init there appears
to be a slight reduction in the time taken to set up devices (from 327ms
to 319ms) so overall the live tree does not appear to be any slower. This
is because pre-parsing the device tree makes reading it later faster.
The use of livetree is controlled by a the CONFIG_OF_LIVE option. When
enabled, U-Boot builds a livetree immediately after relocation and uses
it from then on.
This series is available at u-boot-dm/livet-working
Changes in v5:
- Update the get_enable() functions to use new method signature
- Update tegra-tk1 to port regulator work-around
Changes in v4:
- Add new patch to add ofnode_read_resource()
- Add new patch to fix up ofnode_get_addr_index() for 64-bit values
- Update to use ofnode_read_resource()
- Drop fdtdec.h header
- Update to deal with rename of ofnode_read_prop()
- Rebase to master
- Drop changes already applied
- Fix PCI and i2c init problems on jetson-tx1
- Enable livetree for jetson-tk1 also
Changes in v3:
- Update commit message, enable for all tegra124 boards not just nyan-big
- Add new patch to convert tegra PCI to device tree
- Enable livetree for jetson-tk1 also
Changes in v2:
- Enable livetree for beaver also
- Add timing information
Simon Glass (20):
dm: core: Add ofnode_read_resource()
dm: core: Fix up ofnode_get_addr_index() for 64-bit values
tegra: spl: Enable debug UART
tegra: tegra124: Add a PMC syscon driver
dm: tegra: Convert USB setup to livetree
dm: tegra: Convert clock_decode_periph_id() to support livetree
dm: video: tegra124: Convert to livetree
tegra: dts: Move stdout-path to /chosen
dm: tegra: gpio: Convert to support livetree
dm: tegra: usb: Convert to livetree
dm: tegra: spi: Convert to livetree
dm: tegra: i2c: Convert to livetree
dm: tegra: pwm: Convert to livetree
dm: tegra: mmc: Convert to livetree
dm: tegra: pci: Convert to livetree
power: Add a regulator driver for the as3722 PMIC
power: Add a GPIO driver for the as3722 PMIC
dm: power: Convert as3722 to driver model
fdtdec: Drop old compatible values
dm: tegra: Move nyan-big, jetson-tk1/tx1, beaver to livetree
arch/arm/dts/tegra124-nyan-big.dts | 5 +-
arch/arm/include/asm/arch-tegra/clock.h | 2 +-
arch/arm/include/asm/arch-tegra/tegra.h | 5 +
arch/arm/include/asm/arch-tegra/xusb-padctl.h | 2 +-
arch/arm/mach-tegra/Kconfig | 2 +
arch/arm/mach-tegra/board2.c | 8 +-
arch/arm/mach-tegra/clock.c | 5 +-
arch/arm/mach-tegra/spl.c | 4 +
arch/arm/mach-tegra/tegra124/Makefile | 1 +
arch/arm/mach-tegra/tegra124/pmc.c | 19 ++
arch/arm/mach-tegra/tegra124/xusb-padctl.c | 36 +++-
arch/arm/mach-tegra/tegra210/xusb-padctl.c | 42 +++-
arch/arm/mach-tegra/xusb-padctl-common.c | 60 +++---
arch/arm/mach-tegra/xusb-padctl-common.h | 8 +-
arch/arm/mach-tegra/xusb-padctl-dummy.c | 2 +-
board/cei/cei-tk1-som/cei-tk1-som.c | 2 +
board/nvidia/jetson-tk1/jetson-tk1.c | 44 ++--
board/nvidia/nyan-big/nyan-big.c | 22 +-
board/toradex/apalis-tk1/apalis-tk1.c | 6 +
configs/apalis-tk1_defconfig | 3 +
configs/beaver_defconfig | 1 +
configs/cei-tk1-som_defconfig | 3 +
configs/jetson-tk1_defconfig | 4 +
configs/nyan-big_defconfig | 2 +
configs/p2371-2180_defconfig | 1 +
drivers/core/ofnode.c | 30 ++-
drivers/core/read.c | 5 +
drivers/core/read_extra.c | 25 +--
drivers/gpio/tegra_gpio.c | 10 +-
drivers/i2c/tegra_i2c.c | 7 +-
drivers/mmc/tegra_mmc.c | 17 +-
drivers/pci/pci_tegra.c | 53 +++--
drivers/power/pmic/Makefile | 2 +-
drivers/power/pmic/as3722.c | 292 +++++++++-----------------
drivers/power/pmic/as3722_gpio.c | 120 +++++++++++
drivers/power/regulator/Kconfig | 9 +
drivers/power/regulator/Makefile | 1 +
drivers/power/regulator/as3722_regulator.c | 149 +++++++++++++
drivers/pwm/tegra_pwm.c | 2 +-
drivers/spi/tegra114_spi.c | 15 +-
drivers/spi/tegra20_sflash.c | 2 +-
drivers/spi/tegra20_slink.c | 2 +-
drivers/spi/tegra210_qspi.c | 2 +-
drivers/usb/host/ehci-tegra.c | 36 ++--
drivers/video/tegra124/display.c | 8 +-
drivers/video/tegra124/dp.c | 3 +-
drivers/video/tegra124/sor.c | 25 +--
include/dm/ofnode.h | 4 +
include/dm/read.h | 26 ++-
include/fdtdec.h | 6 -
include/power/as3722.h | 29 ++-
lib/fdtdec.c | 6 -
52 files changed, 730 insertions(+), 445 deletions(-)
create mode 100644 arch/arm/mach-tegra/tegra124/pmc.c
create mode 100644 drivers/power/pmic/as3722_gpio.c
create mode 100644 drivers/power/regulator/as3722_regulator.c
--
2.14.0.rc0.284.gd933b75aa4-goog
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