Commit graph

52373 commits

Author SHA1 Message Date
Lokesh Vutla
5d21406516 ARM: keystone2: Add support for parsing monitor header
Given that boot monitor image is being generated to a specific target location
depending on the SoC and U-boot relies on addr_mon env variable to be aligned
with boot monitor target location. When ever the target address gets updated in
boot monitor, it is difficult to sync between u-boot and boot monitor and also
there is no way to update user that boot monitor image is updated.

To avoid this problem, boot monitor image is being generated with mkimage
header. Adding support in mon_install command for parsing this header.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-10-01 20:05:10 -04:00
Murali Karicheri
86e3ca1178 keystone2: k2g: add env script to load firmware initramfs as part of boot flow
On K2G, the PCIe SerDes h/w is a re-use from other K2 devices and SerDes
driver requires a firmware image to initialize the SerDes h/w device.
This is firmware is part of the initramfs file that is loaded to memory
in u-boot and passed to kernel as in other K2 platforms. This patch
customize the u-boot env to have this done automatically when the K2G EVM
boots up. With this, a user may be able to boot the EVM with a standard
PCIe card at the x1 PCIe slot and release image and test PCIe devices
such as NIC, SATA etc.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-10-01 20:05:08 -04:00
Lokesh Vutla
e1ae357d4b board: k2g: Enable ECC byte lane
Enable ECC byte lane for k2g-evm

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-10-01 20:05:07 -04:00
Lokesh Vutla
e92a6b2ee3 board: ks2: Enable ECC using detected DDR size
EEC is being enabled based on the ddr size populated by SPD data.
But not all keystone platforms have SPD data to detect ddr3 size.
So, enable ECC using the detected DDR size.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-10-01 20:05:05 -04:00
Petr Kulhavy
6f6c863094 fastboot: move FASTBOOT_FLASH options into Kconfig
Move FASTBOOT_MBR_NAME and FASTBOOT_GPT_NAME into Kconfig.
Add dependency on the FASTBOOT_FLASH setting (also for FASTBOOT_MBR_NAME).
Remove the now redundant GPT_ENTRY_NAME.

Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Steve Rae <steve.rae@raedomain.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Add FIXME about xxx_PARTITION needing to be in Kconfig]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-10-01 20:04:59 -04:00
Petr Kulhavy
da2ee24d91 disk: part: refactor generic name creation for DOS and ISO
In both DOS and ISO partition tables the same code to create partition name
like "hda1" was repeated.

Code moved to into a new function part_set_generic_name() in part.c and optimized.
Added recognition of MMC and SD types, name is like "mmcsda1".

Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Steve Rae <steve.rae@raedomain.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-01 20:04:56 -04:00
Petr Kulhavy
b6dd69a4d6 fastboot: add support for writing MBR
Add special target "mbr" (otherwise configurable via CONFIG_FASTBOOT_MBR_NAME)
to write MBR partition table.
Partitions are now searched using the generic function which finds any
partiiton by name. For MBR the partition names hda1, sda1, etc. are used.

Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Steve Rae <steve.rae@raedomain.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-01 20:04:51 -04:00
Petr Kulhavy
87b8530fe2 disk: part: implement generic function part_get_info_by_name()
So far partition search by name has been supported only on the EFI partition
table. This patch extends the search to all partition tables.

Rename part_get_info_efi_by_name() to part_get_info_by_name(), move it from
part_efi.c into part.c and make it a generic function which traverses all part
drivers and searches all partitions (in the order given by the linked list).

For this a new variable struct part_driver.max_entries is added, which limits
the number of partitions searched. For EFI this was GPT_ENTRY_NUMBERS.
Similarly the limit is defined for DOS, ISO, MAC and AMIGA partition tables.

Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Steve Rae <steve.rae@raedomain.com>
2016-10-01 20:04:45 -04:00
Zubair Lutfullah Kakakhel
ba07984068 bootm: fix passing argc to standalone apps
This bug appears in b6396403 which makes u-boot unable to pass
arguments via bootm to a standalone application without this patch.

Steps to reproduce.

Compile a u-boot. Use mkimage to package the standalone hello_world.bin
file.

e.g. For the MIPS Boston platform

mkimage -n "hello" -A mips -O u-boot -C none -T standalone \
     -a 0xffffffff80200000 -d hello_world.bin \
     -ep 0xffffffff80200000 hello_out

Then tftp hello_out and run it using

boston # dhcp 192.168.154.45:hello_out
...
boston # bootm $loadaddr 123 321

Without the patch the following output is observed.

boston # bootm $loadaddr 123 321
   Image Name:   hello
   Image Type:   MIPS U-Boot Standalone Program (uncompressed)
   Data Size:    1240 Bytes = 1.2 KiB
   Load Address: 80200000
   Entry Point:  80200000
   Verifying Checksum ... OK
   Loading Standalone Program ... OK
Example expects ABI version 8
Actual U-Boot ABI version 8
Hello World
argc = 0
argv[0] = "0xffffffff88000000"

With the patch, you see the following.

boston # bootm $loadaddr 123 321
   Image Name:   hello
   Image Type:   MIPS U-Boot Standalone Program (uncompressed)
   Data Size:    1240 Bytes = 1.2 KiB
   Load Address: 80200000
   Entry Point:  80200000
   Verifying Checksum ... OK
   Loading Standalone Program ... OK
Example expects ABI version 8
Actual U-Boot ABI version 8
Hello World
argc = 3
argv[0] = "0xffffffff88000000"
argv[1] = "123"
argv[2] = "321"
argv[3] = "<NULL>"

Without the patch, the go command at the entry point seems to work.

boston # go 0xffffffff80200000 123 321
Example expects ABI version 8
Actual U-Boot ABI version 8
Hello World
argc = 3
argv[0] = "0xffffffff80200000"
argv[1] = "123"
argv[2] = "321"
argv[3] = "<NULL>"
Hit any key to exit ...

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-01 20:04:37 -04:00
Masahiro Yamada
b98278be7b input: specify the default of I8042_KEYB in more correct manner
Creating multiple entries of "config FOO" often gives us bad
experiences.  In this case, we should specify "default X86"
as platforms that want this keyboard by default.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-01 20:04:35 -04:00
Masahiro Yamada
558e12571e sandbox, x86: select DM_KEYBOARD instead of default y entry
Once we migrate to DM-based drivers, we cannot go back to legacy
ones, i.e. config options like DM_* are not user-configurable.

Make SANDBOX and X86 select DM_KEYBOARD like other platforms do.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-01 20:04:33 -04:00
Tom Rini
45b047e557 Merge branch 'master' of git://git.denx.de/u-boot-nds32 2016-09-30 21:59:11 -04:00
Tom Rini
fe4ba689a0 Merge branch 'master' of git://git.denx.de/u-boot-usb
Signed-off-by: Tom Rini <trini@konsulko.com>

Conflicts:
	include/configs/dra7xx_evm.h
2016-09-30 21:58:44 -04:00
rick
d607f6fa99 nds32: Support relocation.
Enable pie option for relocation.

Signed-off-by: rick <rick@andestech.com>
Cc: Andes <uboot@andestech.com>
2016-09-29 15:38:10 +08:00
Sriram Dash
f413d1cae8 mpc85xx: powerpc: usb: Update the list of Socs afftected by erratum A006261
Apply the erratum A006261 for the following Socs:
P2041 rev 2.0, P2040 rev 2.0, P5040 rev 2.0, 2.1

Do not apply erratum A006261 for the following Socs:
T4160, T4080, T1040, T1042, T1020, T1022, T2080, T2081

Erratum A006261 is applicable for the following Socs:
P1010(1.0, 2.0), P2041(1.0, 1.1, 2.0, 2.1), P2040(1.0, 1.1, 2.0, 2.1),
P3041(1.0, 1.1, 2.0, 2.1), P5010(1.0, 2.0), P5020(1.0, 2.0),
P5021(1.0, 2.0), T4240(1.0, 2.0), P5040(1.0,2.0,2.1).

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-09-28 09:08:16 -07:00
Sriram Dash
15a6d496e7 mpc85xx: powerpc: usb: Enable Usb phy initialisation settings for P1010
CONFIG_SYS_FSL_USB1_PHY_ENABLE is set and the USB Phy
offset are set to enable the initial setting of Usb Phy for P1010.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-09-28 09:08:16 -07:00
Sriram Dash
08efeac55f mpc85xx: powerpc: usb: Modified the erratum A006261 according to endianness
Modifies erratum implementation due to the fact that P3041,
P5020, and P5040 are all big endian for the USB PHY registers, but
they were specified little endian.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-09-28 09:08:16 -07:00
Sriram Dash
4c043712e9 drivers: usb: xhci-fsl: Implement Erratum A-010151 for FSL USB3 controller
Currently the controller by default enables the Receive Detect feature in P3
mode in USB 3.0 PHY. However, USB 3.0 PHY does not reliably support receive
detection in P3 mode.
Enabling the USB3 controller to configure USB in P2 mode whenever the Receive
Detect feature is required.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
2016-09-27 23:30:49 +02:00
Sriram Dash
c609775e6f usb: fsl: Renaming fdt_fixup_erratum and fdt_fixup_usb_erratum
The functions fdt_fixup_erratum and fdt_fixup_usb_erratum are
fsl/nxp specific. So, make them explicit by renaming them
fsl_fdt_fixup_erratum and fsl_fdt_fixup_usb_erratum

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
2016-09-27 23:30:27 +02:00
Sriram Dash
a5c289b9bc usb: fsl: Rename fdt_fixup_dr_usb
The function fdt_fixup_dr_usb is specific to fsl/nxp. So,
make the function name explicit and rename fdt_fixup_dr_usb
into fsl_fdt_fixup_dr_usb.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
2016-09-27 23:30:27 +02:00
Marcel Ziswiler
f7c81e2879 apalis_t30: colibri_imx7: colibri_t30: fix ethernet functionality
Since commit aa7a648747
("net: Stop including NFS overhead in defragment max") the following
has been reproducibly observed while trying to transfer data over TFTP:

Load address: 0x80408000
Loading: EHCI timed out on TD - token=0x8008d80
T EHCI timed out on TD - token=0x88008d80
Rx: failed to receive: -5

This patch fixes this by lowering our TFTP block size to be within the
standard maximal de-fragmentation aka IP packet size again.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
2016-09-27 23:30:26 +02:00
Sanchayan Maity
86e5a04bb8 configs: colibri_vf_defconfig: Enable USB driver model for Colibri Vybrid
Enable USB driver model for Toradex Colibri Vybrid modules.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2016-09-27 23:30:25 +02:00
Sanchayan Maity
727f790829 ARM: dts: vf-colibri: Enable USB device tree node for Colibri Vybrid
Enable USB device tree node for Toradex Colibri Vybrid module.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2016-09-27 23:30:24 +02:00
Sanchayan Maity
5aaad0647a ARM: dts: vf: Add device tree node for USB on Vybrid
Add device tree node for USB peripheral on Vybrid.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2016-09-27 23:30:23 +02:00
Sanchayan Maity
0885cdb9d1 usb: host: ehci-vf: Migrate Vybrid USB to driver model
Add driver model support for Vybrid USB driver.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2016-09-27 23:30:22 +02:00
Sanchayan Maity
54a708ca06 cmd: dfu: Add error handling for failed registration
Without this, if g_dnl_register() fails, DFU code continues on
blindly and crashes. This fix makes it simply print an error
message instead.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
[l.majewski@samsung.com - some manual tweaks needed]
2016-09-27 23:30:22 +02:00
B, Ravi
cdb1808aef dra7x: configs: enable SPL-DFU support
This patch enables the SPL-DFU support for
dra7x platform.

Signed-off-by: Ravi Babu <ravibabu@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-09-27 23:30:21 +02:00
B, Ravi
6f8387f120 dra7x: boot: add dfu bootmode support
This patch enables the DFU boot mode support
for dra7x platform.

Signed-off-by: Ravi Babu <ravibabu@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-09-27 23:30:20 +02:00
B, Ravi
52f2acc5e0 spl: dfu: adding dfu support functions for SPL-DFU
Adding support functions to run dfu spl commands.

Signed-off-by: Ravi Babu <ravibabu@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-09-27 23:30:19 +02:00
B, Ravi
05341a8764 common: dfu: saperate the dfu common functionality
The cmd_dfu functionality is been used by both SPL and
u-boot, saperating the core dfu functionality moving
it to common/dfu.c.

Signed-off-by: Ravi Babu <ravibabu@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-09-27 23:30:18 +02:00
B, Ravi
bc5dbcb918 spl: dfu: add dfu support in SPL
Traditionally the DFU support is available only
as part 2nd stage boot loader(u-boot) and DFU
is not supported in SPL.

The SPL-DFU feature is useful for boards which
does not have MMC/SD, ethernet boot mechanism
to boot the board and only has USB inteface.

This patch add DFU support in SPL with RAM
memory device support to load and execute u-boot.
And then leverage full functionality DFU in
u-boot to flash boot inital binary images to
factory or bare-metal boards to memory devices
like SPI, eMMC, MMC/SD card using USB interface.

This SPL-DFU support can be enabled through
Menuconfig->Boot Images->Enable SPL-DFU support

Signed-off-by: Ravi Babu <ravibabu@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-09-27 23:30:17 +02:00
Sriram Dash
e915716a5c drivers: usb: xhci-fsl: Change burst beat and outstanding pipelined transfers requests
This is required for better performance, and performs below tuning:
1. Enable burst length set, and define it as 4/8/16.
2. Set burst request limit to 16 requests.

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
2016-09-27 23:30:16 +02:00
Marcel Ziswiler
7f753cbea4 colibri_t30: fix usb ethernet functionality
Since commit aa7a648747
("net: Stop including NFS overhead in defragment max") the following
has been reproducibly observed while trying to transfer data over TFTP:

Load address: 0x80408000
Loading: EHCI timed out on TD - token=0x8008d80
T EHCI timed out on TD - token=0x88008d80
Rx: failed to receive: -5

This patch fixes this by upping our maximal de-fragmentation aka IP
packet size again.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
2016-09-27 23:30:15 +02:00
Alban Bedel
cea6c8ce23 net: asix: Fix ASIX 88772B with driver model
Commit 147271209a ("net: asix: fix operation without eeprom")
added a special handling for ASIX 88772B that enable another
type of header. This break the driver in DM mode as the extra handling
needed in the receive path is missing.

However this new header mode is not required and only seems to
increase the code complexity, so this patch revert this part of
commit 147271209a.

This also reverts commit 41d1258ace
("net: asix: Fix AX88772B when used with DriverModel") of late.

Fixes: 147271209a ("net: asix: fix operation without eeprom")

Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
2016-09-27 23:30:14 +02:00
Tom Rini
06572f0301 Merge git://www.denx.de/git/u-boot-ppc4xx 2016-09-27 12:48:18 -04:00
Tom Rini
40e1236afe Merge branch 'master' of git://git.denx.de/u-boot-tegra 2016-09-27 12:47:25 -04:00
Tom Rini
657d70cd4a CPCI4052: Remove CONFIG_AUTO_COMPLETE and custom baud rate table
This board is getting close to or exceeding the size limit again, remove
CONFIG_AUTO_COMPLETE to save space and while in here switch to the
default and slightly less complete default baudrate table.

Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2016-09-27 18:24:52 +02:00
Stephen Warren
8e5d804f89 ARM: tegra: flush caches via SMC call
On Tegra186, it is necessary to perform an SMC to fully flush all caches;
flushing/cleaning by set/way is not enough. Implement the required hook
to make this happen.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:03 -07:00
Stephen Warren
6dca554f23 ARM: tegra: fix ULPI PHY on Ventana and Seaboard
Commit ce02a71c23 "tegra: dts: Sync tegra20 device tree files with
Linux" enabled the ULPI USB port on Ventana, but made no attempt to ensure
that U-Boot code could handle this. In practice, various code is missing,
and various configuration options are not enabled, which causes U-Boot to
hang when attempting to initialize this USB port. This patch enables ULPI
PHY support on Ventana, and adds the required pinmux setup for the port to
operate. Note that Ventana is so similar to Seaboard that this change is
made in the Seaboard board file, which is shared with Ventana.

Seaboard also has the ULPI USB port wired up in hardware, although to an
internal port that often doesn't have anything attached to it. However,
the DT nodes for the USB controller and PHY had different status property
values, so the port was not initialized by U-Boot. Fix this inconsistency,
and enable the ULPI port, just like in the Linux kernel DT. This likewise
requires enabling ULPI support in the Seaboard defconfig.

Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:03 -07:00
Stephen Warren
002ddbffb6 ARM: tegra: fix USB controller aliases
Some boards have a different set of USB controllers enabled in DT than
the set referenced by /alias entries. This patch fixes that. For
example, this avoids the following message while booting on Ventana,
which is caused by the fact that the USB0 controller had no alias, and
defaulted to wanting a sequence number of 0, which was later explicitly
requested by the alias for USB controller 2.

USB2:   Device 'usb@c5008000': seq 0 is in use by 'usb@c5000000'

This didn't affect USB operation in any way though.

Related, there's no need for the USB controller aliases to have an order
that's different from the HW order, so re-order any aliases to match the
HW ordering. This has the benefit that since USB controller 0 is the only
one that supports device-mode in HW, and U-Boot only supports enabling
device move on controller 0, there's now good synergy in the ordering! For
Tegra20, that's not relevant at present since USB device mode doesn't work
correctly on that SoC, but it will save some head-scratching later.

This patch doesn't fix the colibri_t20 board, even though it has the same
issue, since Marcel already sent a patch for that.

Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Harmony and Ventana
2016-09-27 09:11:03 -07:00
Stephen Warren
2f6a7e8ce5 ARM: tegra: fix USB ULPI PHY reset signal inversion confusion
USB ULPI PHY reset signals are typically active low. Consequently, they
should be marked as GPIO_ACTIVE_LOW in device tree, and indeed they are in
the Linux kernel DTs, and in DT properties that U-Boot doesn't yet use.
However, in DT properties that U-Boot does use, the value has been set to
0 (== GPIO_ACTIVE_HIGH) to work around a bug in U-Boot.

This change fixes the DT to correctly represent the HW, and fixes the
Tegra USB driver to cope with the fact that dm_gpio_set_value() internally
handles any inversions implied by the DT value GPIO_ACTIVE_LOW.

Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:03 -07:00
Stephen Warren
fc607d9ab9 i2c: tegra: only use new clock/reset APIs
Now that the standard clock/reset APIs are available for all Tegra SoCs,
convert the I2C driver to use them exclusively, and remove any references
to the custom Tegra-specific APIs.

Cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:03 -07:00
Stephen Warren
e8adca9ecf mmc: tegra: only use new clock/reset APIs
Now that the standard clock/reset APIs are available for all Tegra SoCs,
convert the MMC driver to use them exclusively, and remove any references
to the custom Tegra-specific APIs.

Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:03 -07:00
Stephen Warren
140a9eaff1 ARM: tegra: enable standard clock/reset APIs everywhere
Implementations of the standard clock and reset APIs are available on all
Tegra SoCs now, so enable compilation of those uclasses.

Enable the Tegra CAR drivers for all SoCs prior to the BPMP being
available. This provides an implementation of those APIs everywhere.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:03 -07:00
Stephen Warren
7468676684 ARM: tegra: fix clock_get_periph_rate() for UART clocks
Make clock_get_periph_rate() return the correct value for UART clocks.

This change needs to be applied before the patches that enable CONFIG_CLK
for Tegra SoCs before Tegra186, since enabling that option causes
ns16550_serial_ofdata_to_platdata() to rely on clk_get_rate() for UART
clocks, and clk_get_rate() eventually calls clock_get_periph_rate().

This change is a rather horrible hack, as explained in the comment added
to the clock driver. I've tried fixing this correctly for all clocks as
described in that comment, but there's too much fallout elsewhere. I
believe the clock driver has a number of bugs which all cancel each-other
out, and unravelling that chain is too complex at present. This change is
the smallest change that fixes clock_get_periph_rate() for UART clocks
while guaranteeing no change in behaviour for any other clock, which
avoids other regressions.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:02 -07:00
Stephen Warren
4a332d3ee7 clock: implement a driver for the Tegra CAR
Implement a clock uclass driver for the Tegra CAR. This allows clients to
use standard clock APIs on Tegra. This device is intended to be
instantiated by the core Tegra CAR driver, rather than being instantiated
directly from DT. The implementation uses the existing custom Tegra-
specific clock APIs to avoid coupling the series with significant
refactoring of the existing Tegra clock/clock code. The driver currently
only supports peripheral clocks, and avoids support for other clocks such
as PLLs and external clocks. This should be sufficient to convert over all
Tegra peripheral drivers, and avoids a complex implementation which calls
different Tegra-specific clock APIs based on the type of clock being
manipulated.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:02 -07:00
Stephen Warren
fe60f06dcd reset: implement a driver for the Tegra CAR
Implement a reset uclass driver for the Tegra CAR. This allows clients to
use standard reset APIs on Tegra. This device is intended to be
instantiated by the core Tegra CAR driver, rather than being instantiated
directly from DT. The implementation uses the existing custom Tegra-
specific reset APIs to avoid coupling the series with significant
refactoring of the existing Tegra clock/reset code.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:02 -07:00
Stephen Warren
bd3ee84ac7 misc: implement Tegra CAR core driver
The Tegra CAR (Clock And Reset) module provides control of most clocks
and reset signals within the Tegra SoC. This change implements a driver
for this module. However, since the module implements multiple kinds of
services (clocks, resets, perhaps more), all this driver does is bind
various sub-devices, which in turn provide the real services. This driver
is essentially an "MFD" (Multi-Function Device) in Linux kernel speak.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:02 -07:00
Stephen Warren
d0ad8a5cbf ARM: tegra: add APIs the clock uclass driver will need
A future patch will implement a clock uclass driver for Tegra. That driver
will call into Tegra's existing clock code to simplify the transition;
this avoids tieing the clock uclass patches into significant refactoring
of the existing custom clock API implementation.

Some of the Tegra clock APIs that manipulate peripheral clocks require
both the peripheral clock ID and parent clock ID to be passed in together.
However, the clock uclass API does not require any such "parent"
parameter, so the clock driver must determine this information itself.
This patch implements new Tegra- specific clock API
clock_get_periph_parent() for this purpose.

The new API is implemented in the core Tegra clock code rather than SoC-
specific clock code. The implementation uses various SoC-/clock-specific
data. That data is only available in SoC-specific clock code.
Consequently, two new internal APIs are added that enable the core clock
code to retrieve this information from the SoC-specific clock code. Due to
the structure of the Tegra clock code, this leads to some unfortunate code
duplication. However, this situation predates this patch.

Ideally, future work will de-duplicate the Tegra clock code, and migrate
it into drivers/clk/tegra. However, such refactoring is kept separate from
this series.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:02 -07:00
Stephen Warren
6dbcc962e4 ARM: tegra: add peripheral clock init table
Currently, Tegra peripheral drivers control two aspects of their HW module
clock(s):

1) The clock enable/rate for the peripheral clock itself.

2) The system-level clock tree setup, i.e. the clock parent.

Aspect 1 is reasonable, but aspect 2 is a system-level decision, not
something that an individual peripheral driver should in general know
about or influence. Such system-level knowledge ties the driver to a
specific SoC implementation, even when they use generic APIs for clock
manipulation, since they must have SoC-specific knowledge such as parent
clock IDs. Limited exceptions exist, such as where peripheral HW is
expected to dynamically switch between clock sources at run-time, such
as CPU clock scaling or display clock conflict management in a multi-head
scenario.

This patch enhances the Tegra core code to perform system-level clock
tree setup, in a similar fashion to the Linux kernel Tegra clock driver.
This will allow future patches to simplify peripheral drivers by removing
the clock parent setup logic.

This change is required prior to converting peripheral drivers to use the
standard clock APIs, since:

1) The clock uclass doesn't currently support a set_parent() operation.
Adding one is possible, but not necessary at the moment.

2) The clock APIs retrieve all clock IDs from device tree, and the DT
bindings for almost all peripherals only includes information about the
relevant peripheral clocks, and not any potential parent clocks.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-27 09:11:02 -07:00