kernel/drivers/soc/tegra, branch linux-5.1.y

soc/tegra: pmc: Remove reset sysfs entries on error

2019-06-15T09:53:00Z

[ Upstream commit a46b51cd2a57d52d5047e1d48240536243eeab34 ] Commit 5f84bb1a4099 ("soc/tegra: pmc: Add sysfs entries for reset info") added sysfs entries for Tegra reset source and level. However, these sysfs are not removed on error and so if the registering of PMC device is probe deferred, then the next time we attempt to probe the PMC device warnings such as the following will be displayed on boot ... sysfs: cannot create duplicate filename '/devices/platform/7000e400.pmc/reset_reason' Fix this by calling device_remove_file() for each sysfs entry added on failure. Note that we call device_remove_file() unconditionally without checking if the sysfs entry was created in the first place, but this should be OK because kernfs_remove_by_name_ns() will fail silently. Fixes: 5f84bb1a4099 ("soc/tegra: pmc: Add sysfs entries for reset info") Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2019-03-06T17:41:12Z

Pull ARM SoC driver updates from Arnd Bergmann: "As usual, the drivers/tee and drivers/reset subsystems get merged here, with the expected set of smaller updates and some new hardware support. The tee subsystem now supports device drivers to be attached to a tee, the first example here is a random number driver with its implementation in the secure world. Three new power domain drivers get added for specific chip families: - Broadcom BCM283x chips (used in Raspberry Pi) - Qualcomm Snapdragon phone chips - Xilinx ZynqMP FPGA SoCs One new driver is added to talk to the BPMP firmware on NVIDIA Tegra210 Existing drivers are extended for new SoC variants from NXP, NVIDIA, Amlogic and Qualcomm" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (113 commits) tee: optee: update optee_msg.h and optee_smc.h to dual license tee: add cancellation support to client interface dpaa2-eth: configure the cache stashing amount on a queue soc: fsl: dpio: configure cache stashing destination soc: fsl: dpio: enable frame data cache stashing per software portal soc: fsl: guts: make fsl_guts_get_svr() static hwrng: make symbol 'optee_rng_id_table' static tee: optee: Fix unsigned comparison with less than zero hwrng: Fix unsigned comparison with less than zero tee: fix possible error pointer ctx dereferencing hwrng: optee: Initialize some structs using memset instead of braces tee: optee: Initialize some structs using memset instead of braces soc: fsl: dpio: fix memory leak of a struct qbman on error exit path clk: tegra: dfll: Make symbol 'tegra210_cpu_cvb_tables' static soc: qcom: llcc-slice: Fix typos qcom: soc: llcc-slice: Consolidate some code qcom: soc: llcc-slice: Clear the global drv_data pointer on error drivers: soc: xilinx: Add ZynqMP power domain driver firmware: xilinx: Add APIs to control node status/power dt-bindings: power: Add ZynqMP power domain bindings ...

soc/tegra: default select TEGRA_TIMER for Tegra210

2019-02-23T11:13:45Z

The tegra timer is necessary for Tegra210 to support CPU idle power-down state. So select it by default. Signed-off-by: Joseph Lo Acked-by: Thierry Reding Acked-by: Jon Hunter Signed-off-by: Daniel Lezcano

soc/tegra: pmc: Support systems where PMC is marked secure

2019-01-25T15:18:24Z

On Tegra210 systems with new enough boot software, direct register accesses to PMC register space from the non-secure world are not allowed. Instead a monitor call may be used to read and write PMC registers. Add code to detect such a system by attempting to write a scratch register and detecting if the write happened or not. If not, we switch to doing all register accesses through the monitor call. Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding Acked-by: Jon Hunter

soc/tegra: pmc: Explicitly initialize all fields

2019-01-25T15:18:24Z

It's not strictly necessary to initialize the fields in struct tegra_pmc_soc if they are 0/false. However, we already initialize them explicitly even if unnecessary, so keep doing that for consistency. Signed-off-by: Thierry Reding Acked-by: Jon Hunter

soc/tegra: pmc: Make alignment consistent

2019-01-25T15:18:23Z

Some recently added code used weird alignment and indentation. Fix these occurrences to make them consistent with the rest of the code. Signed-off-by: Thierry Reding Acked-by: Jon Hunter

soc/tegra: pmc: Pass struct tegra_pmc * where possible

2019-01-25T15:18:23Z

Instead of using the global pmc variable, pass around a pointer where possible. Also, replace most occurrences of pr_*() functions by their equivalent dev_*() functions, reusing the pmc->dev pointer. It's not possible to get completely rid of the global variable because some of the public API that this driver exposes still relies on it. Signed-off-by: Thierry Reding Acked-by: Jon Hunter

soc/tegra: pmc: Make tegra_powergate_is_powered() a local function

2019-01-25T13:17:49Z

Now there are no more external users of tegra_powergate_is_powered(), make this a local function. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Add missing kerneldoc

2019-01-25T13:17:37Z

Some of the fields in struct tegra_pmc had not been documented when they were added. Add the missing kerneldoc. Signed-off-by: Thierry Reding Acked-by: Jon Hunter

soc/tegra: pmc: Sort includes alphabetically

2019-01-25T13:17:21Z

This will make it easier to insert new includes in the right place in subsequent patches. Signed-off-by: Thierry Reding Acked-by: Jon Hunter