From: Tim Gover <tim.gover@raspberrypi.com>
To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: Stefan Wahren <stefan.wahren@i2se.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Dave Stevenson <dave.stevenson@raspberrypi.com>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
Phil Elwell <phil@raspberrypi.com>, Eric Anholt <eric@anholt.net>,
bcm-kernel-feedback-list@broadcom.com,
Maxime Ripard <maxime@cerno.tech>,
Nathan Chancellor <natechancellor@gmail.com>,
Hoegeun Kwon <hoegeun.kwon@samsung.com>,
linux-arm-kernel@lists.infradead.org,
linux-rpi-kernel@lists.infradead.org
Subject: Re: [PATCH v5 80/80] ARM: dts: bcm2711: Enable the display pipeline
Date: Thu, 1 Oct 2020 20:45:45 +0100 [thread overview]
Message-ID: <CAAvKZ65qyKDrmzHR=HELJmrRdchJ8MEXJZJGcj1oyNXg-BamZA@mail.gmail.com> (raw)
In-Reply-To: <8bc3f2b0d1b5ae59996bc9316a401a68c92ebac7.camel@suse.de>
Sorry, my previous statement was misleading.
enable_uart will select the mini_uart for gpio14,15 unless the
disable-bt device tree overlay is loaded. As well as disabling
bluetooth disable-bt swaps the uart0 pin configs to point the regular
UART to gpio 14,15. After resolving the DT overlays the firmware does
the initial UART setup according to which controller is pointed at
pins 14,15.
I'll have to speak to others about exactly when the fixing of the core
clock takes effect. There have been a few changes related to the
initial turbo frequency configuration and how this is reported via the
mbox APIs
On Thu, 1 Oct 2020 at 17:47, Nicolas Saenz Julienne
<nsaenzjulienne@suse.de> wrote:
>
> Hi Tim, thanks for the info!
>
> On Thu, 2020-10-01 at 11:15 +0100, Tim Gover wrote:
> > hdmi_enable_4k60=1 causes the firmware to select 3.3 GHz for the PLLC
> > VCO to support a core-frequency of 550 MHz which is the minimum
> > frequency required by the HVS at 4Kp60. The side effect is that if the
> > display clock requirements are lower than 4Kp60 then you will see
> > different core frequencies selected by DVFS.
> >
> > If enable_uart=1 and the mini-uart is selected (default unless
>
> What is the actual test made to check if mini-uart is selected? I can't get
> firmware to trigger this behaviour with 64-bit upstream kernel/dts. Note that I
> see the core clk setup at 200MHz just before having VC4 set it to 500MHz.
>
> The only thing I've got on my config.txt is:
>
> enable_uart=1
> arm_64bit=1
>
> Maybe we're missing some kind of DT alias upstream?
>
> Regards,
> Nicolas
>
> > bluetooth is disabled) then the firmware will pin the core-frequency
> > to either core_freq max (500 or 550). Although, I think there is a way
> > of pinning it to a lower fixed frequency.
> >
> > The table in overclocking.md defines options for setting the maximum
> > core frequency but unless core_freq_min is specified DVFS will
> > automatically pick the lowest idle frequency required by the display
> > resolution.
>
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next prev parent reply other threads:[~2020-10-01 19:47 UTC|newest]
Thread overview: 114+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200904071259epcas1p3de4209531c0bc5ed6ea9ef19827b6ed5@epcas1p3.samsung.com>
2020-09-03 8:00 ` [PATCH v5 00/80] drm/vc4: Support BCM2711 Display Pipeline Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 01/80] dt-bindings: display: Add support for the BCM2711 HVS Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 02/80] drm/vc4: Add support for the BCM2711 HVS5 Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 03/80] drm/vc4: hvs: Boost the core clock during modeset Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 04/80] drm/vc4: plane: Change LBM alignment constraint on LBM Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 05/80] drm/vc4: plane: Optimize the LBM allocation size Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 06/80] drm/vc4: plane: Create more planes Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 07/80] drm/vc4: crtc: Deal with different number of pixel per clock Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 08/80] drm/vc4: crtc: Use a shared interrupt Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 09/80] drm/vc4: crtc: Move the cob allocation outside of bind Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 10/80] drm/vc4: crtc: Rename HVS channel to output Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 11/80] drm/vc4: crtc: Use local chan variable Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 12/80] drm/vc4: crtc: Enable and disable the PV in atomic_enable / disable Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 13/80] drm/vc4: kms: Convert to for_each_new_crtc_state Maxime Ripard
2020-09-04 15:42 ` Dave Stevenson
2020-09-03 8:00 ` [PATCH v5 14/80] drm/vc4: crtc: Assign output to channel automatically Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 15/80] drm/vc4: crtc: Add FIFO depth to vc4_crtc_data Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 16/80] drm/vc4: crtc: Add function to compute FIFO level bits Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 17/80] drm/vc4: crtc: Rename HDMI encoder type to HDMI0 Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 18/80] drm/vc4: crtc: Add HDMI1 encoder type Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 19/80] drm/vc4: crtc: Disable color management for HVS5 Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 20/80] drm/vc4: crtc: Turn pixelvalve reset into a function Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 21/80] drm/vc4: crtc: Move PV dump to config_pv Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 22/80] drm/vc4: crtc: Move HVS init and close to a function Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 23/80] drm/vc4: crtc: Move the HVS gamma LUT setup to our init function Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 24/80] drm/vc4: hvs: Make sure our channel is reset Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 25/80] drm/vc4: crtc: Remove mode_set_nofb Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 26/80] drm/vc4: crtc: Remove redundant pixelvalve reset Maxime Ripard
2020-09-03 8:00 ` [PATCH v5 27/80] drm/vc4: crtc: Move HVS channel init before the PV initialisation Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 28/80] drm/vc4: encoder: Add finer-grained encoder callbacks Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 29/80] drm/vc4: crtc: Add a delay after disabling the PixelValve output Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 30/80] drm/vc4: crtc: Clear the PixelValve FIFO on disable Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 31/80] drm/vc4: crtc: Clear the PixelValve FIFO during configuration Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 32/80] drm/vc4: hvs: Make the stop_channel function public Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 33/80] drm/vc4: hvs: Introduce a function to get the assigned FIFO Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 34/80] drm/vc4: crtc: Move the CRTC disable out Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 35/80] drm/vc4: drv: Disable the CRTC at boot time Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 36/80] dt-bindings: display: vc4: pv: Add BCM2711 pixel valves Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 37/80] drm/vc4: crtc: Add BCM2711 pixelvalves Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 38/80] drm/vc4: hdmi: Use debugfs private field Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 39/80] drm/vc4: hdmi: Move structure to header Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 40/80] drm/vc4: hdmi: rework connectors and encoders Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 41/80] drm/vc4: hdmi: Remove DDC argument to connector_init Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 42/80] drm/vc4: hdmi: Rename hdmi to vc4_hdmi Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 43/80] drm/vc4: hdmi: Move accessors " Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 44/80] drm/vc4: hdmi: Use local vc4_hdmi directly Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 45/80] drm/vc4: hdmi: Add container_of macros for encoders and connectors Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 46/80] drm/vc4: hdmi: Pass vc4_hdmi to CEC code Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 47/80] drm/vc4: hdmi: Retrieve the vc4_hdmi at unbind using our device Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 48/80] drm/vc4: hdmi: Remove vc4_dev hdmi pointer Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 49/80] drm/vc4: hdmi: Remove vc4_hdmi_connector Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 50/80] drm/vc4: hdmi: Introduce resource init and variant Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 51/80] drm/vc4: hdmi: Implement a register layout abstraction Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 52/80] drm/vc4: hdmi: Add reset callback Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 53/80] drm/vc4: hdmi: Add PHY init and disable function Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 54/80] drm/vc4: hdmi: Add PHY RNG enable / " Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 55/80] drm/vc4: hdmi: Add a CSC setup callback Maxime Ripard
2020-09-04 15:45 ` Dave Stevenson
2020-09-03 8:01 ` [PATCH v5 56/80] drm/vc4: hdmi: Add a set_timings callback Maxime Ripard
2020-09-04 15:46 ` Dave Stevenson
2020-09-03 8:01 ` [PATCH v5 57/80] drm/vc4: hdmi: Store the encoder type in the variant structure Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 58/80] drm/vc4: hdmi: Deal with multiple debugfs files Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 59/80] drm/vc4: hdmi: Move CEC init to its own function Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 60/80] drm/vc4: hdmi: Add CEC support flag Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 61/80] drm/vc4: hdmi: Remove unused CEC_CLOCK_DIV define Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 62/80] drm/vc4: hdmi: Rename drm_encoder pointer in mode_valid Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 63/80] drm/vc4: hdmi: Adjust HSM clock rate depending on pixel rate Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 64/80] drm/vc4: hdmi: Use clk_set_min_rate instead Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 65/80] drm/vc4: hdmi: Use reg-names to retrieve the HDMI audio registers Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 66/80] drm/vc4: hdmi: Reset audio infoframe on encoder_enable if previously streaming Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 67/80] drm/vc4: hdmi: Set the b-frame marker to the match ALSA's default Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 68/80] drm/vc4: hdmi: Add audio-related callbacks Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 69/80] drm/vc4: hdmi: Deal with multiple ALSA cards Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 70/80] drm/vc4: hdmi: Remove register dumps in enable Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 71/80] drm/vc4: hdmi: Always recenter the HDMI FIFO Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 72/80] drm/vc4: hdmi: Implement finer-grained hooks Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 73/80] drm/vc4: hdmi: Do the VID_CTL configuration at once Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 74/80] drm/vc4: hdmi: Switch to blank pixels when disabled Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 75/80] drm/vc4: hdmi: Add pixel BVB clock control Maxime Ripard
2020-09-04 9:46 ` Dave Stevenson
2020-09-07 16:21 ` Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 76/80] drm/vc4: hdmi: Support the BCM2711 HDMI controllers Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 77/80] dt-bindings: display: vc4: hdmi: Add BCM2711 HDMI controllers bindings Maxime Ripard
2020-09-07 11:54 ` Hoegeun Kwon
2020-09-03 8:01 ` [PATCH v5 78/80] dt-bindings: display: vc4: Document BCM2711 VC5 Maxime Ripard
2020-09-03 8:01 ` [PATCH v5 79/80] drm/vc4: drv: Support BCM2711 Maxime Ripard
2020-09-04 15:51 ` Dave Stevenson
2020-09-03 8:01 ` [PATCH v5 80/80] ARM: dts: bcm2711: Enable the display pipeline Maxime Ripard
2020-09-07 12:03 ` Hoegeun Kwon
2020-09-08 16:31 ` Nicolas Saenz Julienne
2020-09-29 22:15 ` Nathan Chancellor
2020-09-30 14:07 ` Maxime Ripard
2020-09-30 16:38 ` Nathan Chancellor
2020-09-30 16:52 ` Stefan Wahren
2020-10-01 6:48 ` Maxime Ripard
2020-10-01 8:54 ` Maxime Ripard
2020-10-01 10:15 ` Tim Gover
2020-10-01 16:47 ` Nicolas Saenz Julienne
2020-10-01 19:45 ` Tim Gover [this message]
2020-10-02 15:19 ` Maxime Ripard
2020-10-02 15:57 ` Dave Stevenson
2020-10-06 15:26 ` Maxime Ripard
2020-10-06 17:14 ` Dave Stevenson
2020-10-08 9:35 ` Nicolas Saenz Julienne
2020-10-01 9:22 ` Nicolas Saenz Julienne
2020-10-01 9:33 ` Maxime Ripard
2020-10-01 18:09 ` Nathan Chancellor
2020-09-07 11:49 ` [PATCH v5 00/80] drm/vc4: Support BCM2711 Display Pipeline Hoegeun Kwon
2020-09-08 12:00 ` Maxime Ripard
2020-09-14 10:14 ` Hoegeun Kwon
2020-09-16 16:57 ` Maxime Ripard
2020-10-08 11:27 ` Maxime Ripard
2020-09-07 16:22 ` Maxime Ripard
2020-09-07 18:21 ` Nicolas Saenz Julienne
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