u-boot.git/arch/arm/include/asm/arch-tegra, branch v2018.09

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12Z

When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini

dm: tegra: Convert clock_decode_periph_id() to support livetree

2017-07-28T18:02:47Z

Adjust this to take a device as a parameter instead of a node. Signed-off-by: Simon Glass Tested-by: Marcel Ziswiler Tested-on: Beaver, Jetson-TK1 Tested-by: Stephen Warren

dm: tegra: Convert USB setup to livetree

2017-07-28T18:02:47Z

Adjust this code to support a live device tree. This should be implemented as a PHY driver but that is left as an exercise for the maintainer. Signed-off-by: Simon Glass Tested-by: Stephen Warren

tegra: tegra124: Add a PMC syscon driver

2017-07-28T18:02:47Z

The PMC can be modelled as a syscon peripheral. Add a driver for this so that it can be accessed by drivers when needed. Enable it for tegra124 boards. Signed-off-by: Simon Glass Tested-by: Marcel Ziswiler Tested-on: Beaver, Jetson-TK1 Tested-by: Stephen Warren

tegra: Init clocks even when SPL did not run

2017-06-09T19:39:32Z

At present early clock init happens in SPL. If SPL did not run (because for example U-Boot is chain-loaded from another boot loader) then the clocks are not set as U-Boot expects. Add a function to detect this and call the early clock init in U-Boot proper. Signed-off-by: Simon Glass

mmc: tegra: allow disabling external clock loopback

2017-04-01T22:45:04Z

Introduce CONFIG_TEGRA124_MMC_DISABLE_EXT_LOOPBACK to disable the external clock loopback and use the internal one on SDMMC3 as per the SDMMC_VENDOR_MISC_CNTRL_0 register's SDMMC_SPARE1 bits being set to 0xfffd according to the TRM. Signed-off-by: Marcel Ziswiler Reviewed-by: Simon Glass Acked-by: Jaehoon Chung Signed-off-by: Marcel Ziswiler Signed-off-by: Tom Warren

ARM: tegra: add APIs the clock uclass driver will need

2016-09-27T16:11:02Z

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 Signed-off-by: Tom Warren

ARM: tegra: add peripheral clock init table

2016-09-27T16:11:02Z

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 Signed-off-by: Tom Warren

mmc: tegra: Add DM_MMC support to Tegra MMC driver

2016-09-27T16:11:01Z

Convert the Tegra MMC driver to DM_MMC. Support for non-DM is removed to avoid ifdefs in the code. DM_MMC is now enabled for all Tegra builds. Cc: Jaehoon Chung Signed-off-by: Tom Warren (swarren, fixed some NULL pointer dereferences, removed extraneous changes, rebased on various other changes, removed non-DM support etc.) Signed-off-by: Stephen Warren

mmc: tegra: priv struct and naming cleanup

2016-09-27T16:11:01Z

struct mmc_host is a Tegra-specific structure, but the name implies it's something defined by core MMC code, which is confusing. Rename it to struct tegra_mmc_priv to make its purpose more obvious. The new name is also more appropriate for a DM driver private data structure, which will be relevant later in this series. Nothing needs access to this type except the MMC driver itself. Move the definition into the driver C file. Make sure all Tegra MMC functions are named tegra_mmc_*. Even though they're all static, it's useful to have good naming so that symbol tables are easy to interpret. A few functions aren't renamed by this patch since they'll be deleted by a subsequent patch in this series. Cc: Jaehoon Chung Signed-off-by: Stephen Warren Signed-off-by: Tom Warren