The user submission is basically a pointer to a command list and a
pointer to uniforms. We copy those in to the kernel, validate and
relocate them, and store the result in a GPU BO which we queue for
execution.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/Makefile | 7
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_regs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
index 9e4e904..4e52a0a 100644
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4
While there exist dumb APIs for creating and mapping BOs, one of the
rules is that drivers doing 3D acceleration have to provide their own
APIs for buffer allocation (besides, the pitch/height parameters of
the dumb alloc don't really make sense for a lot of 3D allocations).
Signed-off-by:
-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_bo.c | 336 +-
drivers/gpu/drm/vc4/vc4_debugfs.c | 1 +
drivers/gpu/drm/vc4/vc4_drv.c | 6 +-
drivers/gpu/drm/vc4/vc4_drv.h | 49 +-
4 files changed, 384 insertions(+), 8 deletions(-)
diff
s (texture sampling). Once it's validated, we return a GEM
BO containing the shader, which doesn't allow mapping for write or
exporting to other subsystems.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/Makefile | 3 +-
drivers/gpu/drm/vc4/vc4_bo.c | 1
This can be parsed with vc4-gpu-tools tools for trying to figure out
what was going on.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_drv.c | 2 +
drivers/gpu/drm/vc4/vc4_drv.h | 4 +
drivers/gpu/drm/vc4/vc4_gem.c | 185 ++
include/uapi/drm
This is the component of the GPU that does 3D rendering.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/Makefile | 1 +
drivers/gpu/drm/vc4/vc4_debugfs.c | 2 +
drivers/gpu/drm/vc4/vc4_drv.c | 1 +
drivers/gpu/drm/vc4/vc4_drv.h | 13 +++
drivers/gpu/drm/vc4/vc4_v3d.c
Emil Velikov writes:
> Hi Eric,
>
> On 1 December 2015 at 20:35, Eric Anholt wrote:
>> Since we have no MMU, the kernel needs to validate that the submitted
>> shader code won't make any accesses to memory that the user doesn't
>> control, which involves ban
Emil Velikov writes:
> Hi Eric,
>
> On 1 December 2015 at 20:35, Eric Anholt wrote:
>> The user submission is basically a pointer to a command list and a
>> pointer to uniforms. We copy those in to the kernel, validate and
>> relocate them, and store the result in
Emil Velikov writes:
> On 1 December 2015 at 20:35, Eric Anholt wrote:
>> This can be parsed with vc4-gpu-tools tools for trying to figure out
>> what was going on.
>>
> I might be pushing my luck here ... have you thought about basing
> (forking) vc4-gpu-tools of in
Remi Pommarel writes:
> Hi,
>
> On Wed, Nov 18, 2015 at 10:25:45AM -0800, Eric Anholt wrote:
>> Remi Pommarel writes:
>>
>> > Make bcm2835_clock_choose_div always round up the chosen MASH divisor so
>> > that
>> > the resulting averag
Remi Pommarel writes:
> On Wed, Nov 18, 2015 at 10:30:17AM -0800, Eric Anholt wrote:
>
> [...]
>
>> > +static int bcm2835_clock_determine_rate(struct clk_hw *hw,
>> > + struct clk_rate_request *req)
>> > +{
>> > + struct bcm2835_clock *c
Daniel Stone writes:
> Hi,
>
> On 1 December 2015 at 20:35, Eric Anholt wrote:
>> An async pageflip stores the modeset to be done and executes it once
>> the BOs are ready to be displayed. This gets us about 3x performance
>> in full screen rendering with pagefl
VC4 wraps the CMA objects in its own structures, so it needs to do its
own teardown (waiting for GPU to finish, updating bo_stats tracking).
The other CMA drivers are using drm_gem_cma_free_object as their
gem_free_object, so this should be a no-op for them.
Signed-off-by: Eric Anholt
Daniel Vetter writes:
> On Mon, Dec 14, 2015 at 04:26:26PM -0800, Eric Anholt wrote:
>> VC4 wraps the CMA objects in its own structures, so it needs to do its
>> own teardown (waiting for GPU to finish, updating bo_stats tracking).
>> The other CMA drivers are using drm_g
From: Alexander Aring
This connects the USB driver to the USB power domain, so that USB can
actually be turned on at boot if the bootloader didn't do it for us.
Signed-off-by: Alexander Aring
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835-rpi.dtsi | 11 +++
arch/arm
of_genpd_add_provider_onecell() fails. We can easily go
back and update the driver when a pm_genpd_exit() lands.
Alexander Aring (3):
ARM: bcm2835: add rpi power domain driver
dt-bindings: add rpi power domain driver bindings
ARM: bcm2835: Add the Raspberry Pi power domain driver to the DT.
Eric Anholt
These packets give us direct access to the firmware's power management
code, as opposed to GET/SET_POWER_STATE packets that only had a couple
of domains implemented.
Signed-off-by: Eric Anholt
---
include/soc/bcm2835/raspberrypi-firmware.h | 2 ++
1 file changed, 2 insertions(+)
diff --
From: Alexander Aring
This patch adds support for several power domains on Raspberry Pi,
including USB (so it can be enabled even if the bootloader didn't do
it), and graphics.
This patch is the combined work of Eric Anholt (who wrote USB support
inside of the Raspberry Pi firmware driver
From: Alexander Aring
This patch adds devicetree tree bindings for the Raspberry Pi power
domain driver.
Signed-off-by: Alexander Aring
Acked-by: Rob Herring
Signed-off-by: Eric Anholt
---
v2: Add the new domains present in v2 to the list.
.../bindings/arm/bcm/raspberrypi,bcm2835
Eric Anholt writes:
> This adds support for enabling, disabling, and setting the rate of the
> audio domain clocks. It will be necessary for setting the pixel clock
> for HDMI in the VC4 driver and let us write a cpufreq driver. It will
> also improve compatibility with user ch
clk-bcm2835.c predates the drivers under bcm/, but all the new BCM
drivers are going in there so let's follow them.
Signed-off-by: Eric Anholt
---
drivers/clk/Makefile| 1 -
drivers/clk/bcm/Makefile| 1 +
drivers/clk/{ => bcm}/clk-bcm2835.c | 0
3 files ch
but it turns out the firmware needed to change to running it at
the 250Mhz core clock speed to avoid a bug in clock domain crossing.
Additionally, anything using BCM2835_CLOCK_VPU will now have a correct
clock rate if the user configures the boot-time core clock speed using
config.txt.
Signed
e() results
would be incorrect, but that's no worse than our current state where
we used fixed clocks.
The existing fixed clocks in the code are left in place to provide
backwards compatibility with old device tree files.
Signed-off-by: Eric Anholt
---
v2: Fix onecell->clks[] allocation
Previously we've only supported a few fixed clocks based on
assumptions about how the firmware sets up the clocks, but this
binding will let us control the actual (audio power domain) clock
manager.
Signed-off-by: Eric Anholt
---
.../bindings/clock/brcm,bcm2835-cprman.txt
This is a followup to the main audio domain clocks series I just
posted. There's a clock gate register controlling the clocks for a
few extra peripherals, and Martin Sperl has been working on the SPI
driver for 2/3 of them (the other is a simple UART). This gives those
drivers the clock gate enab
There are a pair of SPI masters and a mini UART that were last minute
additions. As a result, they didn't get integrated in the same way as
the other gates off of the VPU clock in CPRMAN.
Signed-off-by: Eric Anholt
---
drivers/clk/bcm/Makefile | 1 +
drivers/clk/bcm/clk-bcm2835-
These will be used for enabling UART1, SPI1, and SPI2.
Signed-off-by: Eric Anholt
---
.../bindings/clock/brcm,bcm2835-aux-clock.txt | 30 ++
include/dt-bindings/clock/bcm2835-aux.h| 17
2 files changed, 47 insertions(+)
create mode 100644
These will be used for enabling UART1, SPI1, and SPI2.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835.dtsi | 7 +++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index a6a55b7..7c37956 100644
--- a/arch/arm/boot/dts
ff-by: Peter Ujfalusi
It sounds like you got positive testing feedback. Using the DMA pool
for our bcm2835_dma_cbs makes sense to me, too.
Reviewed-by: Eric Anholt
signature.asc
Description: PGP signature
Michel Dänzer writes:
> On 08.12.2015 10:16, Eric Anholt wrote:
>> Emil Velikov writes:
>>
>>> Hi Eric,
>>>
>>> A couple of suggestions/requests on the UAPI header side
>>>
>>> On 1 December 2015 at 20:35, Eric Anholt wrote:
Stefan Wahren writes:
> Hi Remi,
>
> Am 07.12.2015 um 19:17 schrieb Remi Pommarel:
>> Hi Stefan,
>>
>> On Sun, Dec 06, 2015 at 10:16:25PM +0100, Stefan Wahren wrote:
>>> Hi Remi,
>>>
>>> please send this patch to devicet...@vger.kernel.org.
>>
>> Ok, just to be sure I understand the process here.
h-2
and a version for booting and testing can be found at:
https://github.com/anholt/linux/tree/vc4-kms-v3d-squash-2-boot
Eric Anholt (9):
drm: Create a driver hook for allocating GEM object structs.
drm/vc4: Add a BO cache.
drm/vc4: Add create and map BO ioctls.
drm/vc4: Add an API for cr
The CMA helpers had no way for a driver to extend the struct with its
own fields. Since the CMA helpers are mostly "Allocate a
drm_gem_cma_object, then fill in a few fields", it's hard to write as
pure helpers without passing in a driver callback for the allocate
step.
Signed-off-
-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_bo.c | 336 +-
drivers/gpu/drm/vc4/vc4_debugfs.c | 1 +
drivers/gpu/drm/vc4/vc4_drv.c | 6 +-
drivers/gpu/drm/vc4/vc4_drv.h | 49 +-
4 files changed, 384 insertions(+), 8 deletions(-)
diff
While there exist dumb APIs for creating and mapping BOs, one of the
rules is that drivers doing 3D acceleration have to provide their own
APIs for buffer allocation (besides, the pitch/height parameters of
the dumb alloc don't really make sense for a lot of 3D allocations).
Signed-off-by:
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_regs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
index 9e4e904..4e52a0a 100644
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4
s (texture sampling). Once it's validated, we return a GEM
BO containing the shader, which doesn't allow mapping for write or
exporting to other subsystems.
Signed-off-by: Eric Anholt
---
v2: Use __u32-style types.
drivers/gpu/drm/vc4/Makefile | 3 +-
drivers/
This can be parsed with vc4-gpu-tools tools for trying to figure out
what was going on.
Signed-off-by: Eric Anholt
---
v2: Use __u32-style types.
drivers/gpu/drm/vc4/vc4_drv.c | 2 +
drivers/gpu/drm/vc4/vc4_drv.h | 4 +
drivers/gpu/drm/vc4/vc4_gem.c | 185
This is the component of the GPU that does 3D rendering.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/Makefile | 1 +
drivers/gpu/drm/vc4/vc4_debugfs.c | 2 +
drivers/gpu/drm/vc4/vc4_drv.c | 1 +
drivers/gpu/drm/vc4/vc4_drv.h | 13 +++
drivers/gpu/drm/vc4/vc4_v3d.c
An async pageflip stores the modeset to be done and executes it once
the BOs are ready to be displayed. This gets us about 3x performance
in full screen rendering with pageflipping.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_crtc.c | 99 +-
drivers/gpu/drm
The user submission is basically a pointer to a command list and a
pointer to uniforms. We copy those in to the kernel, validate and
relocate them, and store the result in a GPU BO which we queue for
execution.
Signed-off-by: Eric Anholt
---
v2: Drop support for NV shader recs (not necessary
The hardware clocks are not controllable by the ARM, so we have to
make requests to the firmware to do so from the VPU side. This will
let us replace fixed clocks in our DT with actual clock control (and
correct frequency information).
Signed-off-by: Eric Anholt
Acked-by: Stephen Warren
Acked
This is a respin of my rpi-dt-clocks series (also available at
https://github.com/anholt/linux/tree/rpi-dt-clocks). New in this
version is mentioning the clk subsystem for drivers/clk/* patches,
some better documentation of behavior in clk-raspberrypi.c, and a new
patch at the tail of the series f
This gets us a correct apb_pclk, which previously was accidentally
using the "20201000.uart" clock from clk-bcm2835.c, due to the
fallback clk_get_sys() path.
Signed-off-by: Eric Anholt
Acked-by: Stephen Warren
---
arch/arm/boot/dts/bcm2835-rpi.dtsi | 7 +++
arch/arm/boot/dts/bc
Signed-off-by: Eric Anholt
Acked-by: Stephen Warren
---
v2: Rename our compat string to mention bcm2835, and make our firmware
phandle be under a vendor-namespaced property.
arch/arm/boot/dts/bcm2835-rpi.dtsi | 6 ++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/boot/dts
This appears to have been copy-and-paste from another serial driver's
DT. The driver has never used this value -- instead, the pl011 driver
is getting the fixed 20201000.uart clock from clk-bcm2835.c.
Signed-off-by: Eric Anholt
Acked-by: Stephen Warren
---
arch/arm/boot/dts/bcm2835.dts
We were previously using a fixed clock declared in the 2835 DT, but
it's actually the core clock, and it might not be the same if you had
adjusted it using the firmware's config.txt.
Signed-off-by: Eric Anholt
Acked-by: Stephen Warren
---
arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 ++
n the firmware driver isn't supported yet, but it
also avoids issues with disabling "unused" clocks due to them not yet
being connected to their consumers in the DT.
Signed-off-by: Eric Anholt
Acked-by: Stephen Warren
---
v2: Declare the mutex static (from review by Baruch Siach), m
Nothing uses it, and I can't find any evidence that anything ever has.
Its role is now filled by the core clock in the firmware driver.
Signed-off-by: Eric Anholt
Acked-by: Stephen Warren
---
drivers/clk/clk-bcm2835.c | 5 -
1 file changed, 5 deletions(-)
diff --git a/drivers/cl
This updates the MMC frequency from 100Mhz to 250Mhz.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835-rpi.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi
b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index 0a32123..5d370cb 100644
--- a/arch/arm/boot
Michael Turquette writes:
> Hi Arnd,
>
> Quoting Arnd Bergmann (2015-12-30 01:29:02)
>> It's also ok to merge the header file and binding with either the dts file
>> changes or the driver and then do the other part the following release.
>>
>> In the past, we've worked around the issue by mergin
Signed-off-by: Jisheng Zhang
> Acked-by: Arnd Bergmann
> Acked-by: Adrian Hunter
Acked-by: Eric Anholt
signature.asc
Description: PGP signature
Eric Anholt writes:
> +#ifdef CONFIG_PM_SLEEP
> +static int vc4_v3d_runtime_suspend(struct device *dev)
> +{
> + struct vc4_v3d *v3d = dev_get_drvdata(dev);
> + struct vc4_dev *vc4 = v3d->vc4;
> +
> + vc4_irq_uninstall(vc4->dev);
> +
> +
This is also involved in the HDMI setup sequence so it's nice to see
it.
Signed-off-by: Eric Anholt
---
This patch and the next one I'd target for -next, since they aren't
functional fixes.
drivers/gpu/drm/vc4/vc4_hdmi.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/driv
It's used for delaying vsync in interlaced mode.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_crtc.c | 2 +-
drivers/gpu/drm/vc4/vc4_regs.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
This series fixes the highest priority problems reported from the
driver getting enabled in Raspbian: modesetting on HDMI was broken if
you weren't at the same resolution that the firmware had set up, or if
the firmware hadn't set up HDMI at all.
If the firmware hadn't brought up HDMI for us, we need to do its
power-on reset sequence (reset HD and and clear its STANDBY bits,
reset HDMI, and leave the PHY disabled).
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 29 -
drivers/gpu/dr
We weren't updating the interlaced bit, so we'd scan out incorrectly
if the firmware had brought up the TV encoder and we were switching to
HDMI.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_crtc.c | 6 ++
drivers/gpu/drm/vc4/vc4_regs.h | 14 ++
2 files c
It looks like when I went to add the interlaced bits, I just took the
existing PV_VERT* block and indented it, instead of copy and pasting
it first. Without this, changing resolution never worked.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_crtc.c | 10 ++
1 file changed, 10
We'd need X to queue up an async pageflip while another is
outstanding, and then take a SIGIO. I think X actually avoids sending
out the next pageflip while one's already queued, but I'm not sure.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_crtc.c | 1 +
1 file chang
The following changes since commit 92e963f50fc74041b5e9e744c330dca48e04f08d:
Linux 4.5-rc1 (2016-01-24 13:06:47 -0800)
are available in the git repository at:
g...@github.com:anholt/linux.git bcm2835-dt-next-2016-02-17
for you to fetch changes up to 1305141d1a7254b53b35303ee84f4c4948007bd0:
Florian Fainelli writes:
> On 12/02/2016 16:53, Eric Anholt wrote:
>> Florian Fainelli writes:
>>
>>> On 10/02/2016 10:51, Eric Anholt wrote:
>>>> Martin Sperl writes:
>>>>
>>>>>> On 09.02.2016, at 01:32, Eric Anholt wro
The following changes since commit 92e963f50fc74041b5e9e744c330dca48e04f08d:
Linux 4.5-rc1 (2016-01-24 13:06:47 -0800)
are available in the git repository at:
g...@github.com:anholt/linux.git bcm2835-defconfig-next-2016-02-17
for you to fetch changes up to 0a05d3b71ada526ef93019fb3fbd6a9556
d1f68b46:
drm/vc4: Add support for YUV planes. (2016-02-16 11:24:08 -0800)
This pull request brings in overlay plane support for vc4.
----
Eric Anholt (10):
drm/v
r
V3D integration due to build breakage) and waits for idle in the
presence of signals (which X likes to do a lot).
Eric Anholt (8):
drm/vc4: Validate that WAIT_BO padding is cleared.
drm/vc4: Fix the clear color for the
Fixes dmesg spam when we just need to wait a moment for the clock
driver to probe.
Signed-off-by: Eric Anholt
---
drivers/i2c/busses/i2c-bcm2835.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2835.c
index
This gets us functional GPU reset again, like we had until a refactor
at merge time. Tested with a little patch to stuff in a broken binner
job every 100 frames.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_drv.h | 6 +-
drivers/gpu/drm/vc4/vc4_gem.c | 26
thout GPU reset
we can end up with a totally wedged desktop (and we do still have some
known GPU hangs). If not, I'm fine with the first patch to -fixes and
the other two to -next.
Eric Anholt (3):
drm/vc4: Fix spurious GPU resets due to BO reuse.
drm/vc4: Enable runtime PM.
drm/vc4: U
We were tracking the "where are the head pointers pointing" globally,
so if another job reused the same BOs and execution was at the same
point as last time we checked, we'd stop and trigger a reset even
though the GPU had made progress.
Signed-off-by: Eric Anholt
---
driv
so much, but in steady-state
GPU-bound rendering we keep the power on (since we keep multiple jobs
outstanding) and even if we power cycle on every job we can still
manage at least 680 fps.
More importantly, though, runtime PM will allow us to power off the
device to do a GPU reset.
Signed-off-
Hi Florian. Here's the first set of patches for bcm2835 for 4.6.
We've got more DT patches that are going to happen for new boards,
too, but they're still getting polished.
The following changes since commit 92e963f50fc74041b5e9e744c330dca48e04f08d:
Linux 4.5-rc1 (2016-01-24 13:06:47 -0800)
a
cific groups we want enabled.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm283x.dtsi | 170 +
1 file changed, 170 insertions(+)
diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi
index 8aaf193..e91198e 100644
---
This way we can get the duplicated pin group definitions out of each
RPi board file, and just leave the i2s variations in them.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 14 +++---
arch/arm/boot/dts/bcm2835-rpi-a.dts | 14 +++---
arch/arm
Since all of these pins were documented, we can use their names to
explain what's going on.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 17 ++---
arch/arm/boot/dts/bcm2835-rpi-a.dts | 17 ++---
arch/arm/boot/dts/bcm2835-rpi-b-plu
This pin group definition comes from downstream. We don't have a
driver for sdhost integrated yet, but they've been experimenting with
it and it sounds useful to bring over.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm283x.dtsi | 4
1 file changed, 4 insertions(+)
di
While it's not documented in the public PDF, it is internally. This
is a standard pin group for the 283x, not rpi-specific.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 4 ++--
arch/arm/boot/dts/bcm2835-rpi-a.dts | 4 ++--
arch/arm/boot/dts/bcm2835-
f my mails this week. I've
now swapped systems.
Eric Anholt (5):
ARM: bcm2835: Define standard pinctrl groups in the gpio node.
ARM: bcm2835: Replace alt0/i2s_alt[02] with standard groups.
ARM: bcm2835: Move the emmc pin group to bcm283x.dtsi.
ARM: bcm2835: Add a group for mapping pins
This is the other SD controller on the platform, which can be swapped
to the role of SD card host using pin muxing.
Signed-off-by: Eric Anholt
---
.../bindings/mmc/brcm,bcm2835-sdhost.txt | 25 ++
1 file changed, 25 insertions(+)
create mode 100644
Documentation
les, speed tests), but I'm not sure what a good
testing regimen for storage drivers would be.
Eric Anholt (4):
dt-bindings: Add binding for brcm,bcm2835-sdhost.
mmc: bcm2835-sdhost: Add new driver for the internal SD controller.
ARM: bcm2835: Include SDHOST in the device tree.
ARM:
written by Phil Elwell in the downstream
Rasbperry Pi tree, and I did a major cleanup on it (+319, -721 lines
out of the original 2055) for inclusion.
Signed-off-by: Eric Anholt
---
drivers/mmc/host/Kconfig |9 +
drivers/mmc/host/Makefile |1 +
drivers/mmc/host/bcm2835-sdhost.c
equest/config process.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm283x.dtsi | 8
1 file changed, 8 insertions(+)
diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi
index 597a78f..7b2721b 100644
--- a/arch/arm/boot/dts/bcm283x.dtsi
+++ b/arch/arm/b
This improves read speed on my SD card (as reported by hdparm -t) from
10.15MB/sec to 16.70MB/sec. Once we add slave DMA, we can get to
18.45MB/sec.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835-rpi.dtsi | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a
From: Phil Elwell
The DT bindings for pinctrl-bcm2835 allow both the function and pull
to contain either one entry or one per pin. However, an error in the
DT parsing can cause failures if the number of pulls differs from the
number of functions.
Signed-off-by: Eric Anholt
Cc: sta
Fixes an error thrown every few seconds when we poll HPD when it's on
a I2C to GPIO expander.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
These are for fixing the vc4 driver on the Pi 3. Note that patch 2
will also be necessary for fixing HPD on the Pi2, which we've been
carrying downstream patches to work around until now.
Eric Anholt (2):
drm/vc4: Let gpiolib know that we're OK with sleeping for HPD.
drm/vc
The original Raspberry Pi had the GPIO active high, but the later
models are active low. The DT GPIO bindings allow specifying the
active flag, except that it doesn't get propagated to the gpiodesc, so
you have to handle it yourself.
Signed-off-by: Eric Anholt
---
drivers/gpu/dr
We were rolling this ourselves, but clk-divider can do it now.
Signed-off-by: Eric Anholt
---
drivers/clk/bcm/clk-bcm2835.c | 13 ++---
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index 9f4df8f..353e438
on my HDMI monitor (everything
except 720x400).
Cc: sta...@vger.kernel.org
Signed-off-by: Eric Anholt
---
drivers/clk/bcm/clk-bcm2835.c | 12 +++-
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index 015e687..9f4d
Since all of these pins were documented, we can use their names to
explain what's going on.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 17 ++---
arch/arm/boot/dts/bcm2835-rpi-a.dts | 17 ++---
arch/arm/boot/dts/bcm2835-rpi-b-plu
This way we can get the duplicated pin group definitions out of each
RPi board file, and just leave the i2s variations in them.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 14 +++---
arch/arm/boot/dts/bcm2835-rpi-a.dts | 14 +++---
arch/arm
cific groups we want enabled.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm283x.dtsi | 170 +
1 file changed, 170 insertions(+)
diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi
index 8aaf193..e91198e 100644
---
This pin group definition comes from downstream. We don't have a
driver for sdhost integrated yet, but they've been experimenting with
it and it sounds useful to bring over.
Signed-off-by: Eric Anholt
---
arch/arm/boot/dts/bcm283x.dtsi | 4
1 file changed, 4 insertions(+)
di
Eric Anholt writes:
> The BCM2835-ARM-Peripherals.pdf documentation specifies what the
> function selects do for the pins, and there are a bunch of obvious
> groupings to be made. With these created, we'll be able to replace
> bcm2835-rpi.dtsi's main "set all
Noralf Trønnes writes:
> Den 05.05.2015 22:27, skrev Eric Anholt:
>> From: Lubomir Rintel
>>
>> This mailbox driver provides a single mailbox channel to write 32-bit
>> values to the VPU and get a 32-bit response. The Raspberry Pi
>> firmware uses this mail
Alexander Stein writes:
> On Thursday 07 May 2015, 12:54:20 wrote Eric Anholt:
>> Noralf Trønnes writes:
>>
>> > Den 05.05.2015 22:27, skrev Eric Anholt:
>> >> From: Lubomir Rintel
>> >>
>> >> This mailbox driver provides a single
that dma_alloc_coherent() and
friends return addresses with 0x4 bits and avoid cache incoherency.
This matches the behavior in the downstream 2708 kernel (see
BUS_OFFSET in arch/arm/mach-bcm2708/include/mach/memory.h).
Signed-off-by: Eric Anholt
Cc: popcorn...@gmail.com
---
arch/arm/boot/dts/bc
Noralf Trønnes writes:
> Den 04.05.2015 21:33, skrev Eric Anholt:
>> There exists a tiny MMU, configurable only by the VC (running the
>> closed firmware), which maps from the ARM's physical addresses to bus
>> addresses. These bus addresses determine the caching beh
Stephen Warren writes:
> On 05/04/2015 01:33 PM, Eric Anholt wrote:
>> There exists a tiny MMU, configurable only by the VC (running the
>> closed firmware), which maps from the ARM's physical addresses to bus
>> addresses. These bus addresses determine the caching beh
that dma_alloc_coherent() and
friends return addresses with 0x4 bits and avoid cache incoherency.
This matches the behavior in the downstream 2708 kernel (see
BUS_OFFSET in arch/arm/mach-bcm2708/include/mach/memory.h).
Signed-off-by: Eric Anholt
Tested-by: Noralf Trønnes
Acked-by: Ste
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