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From: Heinrich Schuchardt <xypron.glpk@gmx.de>
To: u-boot@lists.denx.de
Subject: [PATCH v2 00/37] dm: Implement OF_PLATDATA_INST in driver model (part E)
Date: Thu, 4 Feb 2021 08:48:38 +0100	[thread overview]
Message-ID: <5ebd0d61-24b8-d672-133f-d2709d032413@gmx.de> (raw)
In-Reply-To: <20210203164353.2577985-1-sjg@chromium.org>

On 2/3/21 5:43 PM, Simon Glass wrote:
> This series builds on the recent dtoc implementation of build-time device
> instantiation.
>
> It adds the required driver model support, which is basically a few more
> data structures.
>
> With this, sandbox_spl and chromebook_coral both use the new feature.
>
> For coral TPL there is a 1.5KB code-size reduction and a 1.75KB data-size
> increase:
>
>     text   data     bss     dec     hex
>    18836   3080      12   21928    55a8    original
>    17229   4896      12   22137    5679    with OF_PLATDATA_INST
>    17277   4896      12   22185    56a9    with OF_PLATDATA_RT
>
> The extra data size is due to the build-time devices which are now
> included in the image instead of being built at runtime. Also the private
> data for each device is allocated in the data region at present, even
> through much of it is just zeroes.
>
> The reduction in code size is due to not needing to bind devices at
> runtime, as a well as a simplified probe() function. Coral requires that
> data be copied out to RAM before being updated, so that adds a small
> amount to size (shown in the third line).
>
> Quite a lot of future work is possible, including reducing the size of
> data structures. See [1] for more ideas. But this series implements the
> basic feature.
>
> To try this out on your board, define CONFIG_SPL_OF_PLATDATA_INST and see
> what you get.
>
> Note: SPL tests do not yet pass with this series. The driver_rt struct
> is not set up so device_get_by_driver_info_idx() does not work. This means
> that looking up phandles will fail. This will be addressed in a v2

This is v2. I see no update to doc/.

Documentation would be very helpful to review the vast change-set.

Best regards

Heinrich

> series, along with documentation updates and a little more information on
> code-size impact.
>
> This series is available at u-boot-dm/tin-working
>
> [1]  https://lists.denx.de/pipermail/u-boot/2020-July/418433.html
>
> Changes in v2:
> - Update to deal with test refactoring series
> - Use separate OF_PLATDATA_DRIVER_RT Kconfigs for driver run-time data
> - Update the condition for dm_test_of_plat_dev()
> - Leave the flags_ memeber in the same struct position

  parent reply	other threads:[~2021-02-04  7:48 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-03 16:43 [PATCH v2 00/37] dm: Implement OF_PLATDATA_INST in driver model (part E) Simon Glass
2021-02-03 16:43 ` [PATCH v2 01/37] sandbox: Drop debug message in os_spl_to_uboot() Simon Glass
2021-02-04 13:36   ` Heinrich Schuchardt
2021-02-03 16:43 ` [PATCH v2 02/37] linker_lists: Allow use in data structures Simon Glass
2021-02-04 13:54   ` Heinrich Schuchardt
2021-02-07 14:37     ` Simon Glass
2021-02-03 16:43 ` [PATCH v2 03/37] dm: core: Add macros to access the new linker lists Simon Glass
2021-02-04 13:46   ` Heinrich Schuchardt
2021-02-03 16:43 ` [PATCH v2 04/37] dm: core: Allow dropping run-time binding of devices Simon Glass
2021-02-04 13:57   ` Heinrich Schuchardt
2021-02-03 16:43 ` [PATCH v2 05/37] dm: core: Adjust uclass setup with of-platdata Simon Glass
2021-02-03 16:43 ` [PATCH v2 06/37] dm: core: Set up driver model for OF_PLATDATA_INST Simon Glass
2021-02-03 16:43 ` [PATCH v2 07/37] dm: core: Skip adding uclasses with OF_PLATDATA_INST Simon Glass
2021-02-03 16:43 ` [PATCH v2 08/37] dm: Add the new dtoc-generated files to the build Simon Glass
2021-02-03 16:43 ` [PATCH v2 09/37] dm: core: Include dt-decl.h automatically Simon Glass
2021-02-03 16:43 ` [PATCH v2 10/37] dm: test: Avoid destroying uclasses with of-platdata-inst Simon Glass
2021-02-03 16:43 ` [PATCH v2 11/37] clk: sandbox: Move priv/plat data to a header file Simon Glass
2021-02-03 16:43 ` [PATCH v2 12/37] clk: fixed-rate: Export driver parts for OF_PLATDATA_INST Simon Glass
2021-02-03 16:43 ` [PATCH v2 13/37] clk: sandbox: Create a special fixed-rate driver Simon Glass
2021-02-03 16:43 ` [PATCH v2 14/37] dm: core: Drop device_get_by_driver_info() Simon Glass
2021-02-03 16:43 ` [PATCH v2 15/37] dm: core: Drop uclass_find_device_by_phandle() with of-platdata Simon Glass
2021-02-03 16:43 ` [PATCH v2 16/37] sandbox: i2c: Move platdata structs to header files Simon Glass
2021-02-03 16:43 ` [PATCH v2 17/37] dm: Rename device_get_by_driver_info_idx() Simon Glass
2021-02-03 16:43 ` [PATCH v2 18/37] sandbox_spl: Increase SPL malloc() size Simon Glass
2021-02-04 14:01   ` Heinrich Schuchardt
2021-02-03 16:43 ` [PATCH v2 19/37] sandbox: i2c: Support i2c emulation with of-platdata Simon Glass
2021-02-03 16:43 ` [PATCH v2 20/37] Revert "sandbox: Disable I2C emulators in SPL" Simon Glass
2021-02-03 16:43 ` [PATCH v2 21/37] sandbox: Create a new sandbox_noinst build Simon Glass
2021-02-03 16:43 ` [PATCH v2 22/37] test: Run sandbox_spl tests on sandbox_noinst Simon Glass
2021-02-03 16:43 ` [PATCH v2 23/37] azure/gitlab: Add tests for sandbox_noinst Simon Glass
2021-02-03 16:43 ` [PATCH v2 24/37] dm: core: Add an option to support SPL in read-only memory Simon Glass
2021-02-03 16:43 ` [PATCH v2 25/37] dm: core: Create a struct for device runtime info Simon Glass
2021-02-03 16:43 ` [PATCH v2 26/37] dm: core: Move flags to device-runtime info Simon Glass
2021-02-03 16:43 ` [PATCH v2 27/37] dm: core: Allow storing priv/plat data separately Simon Glass
2021-02-03 16:43 ` [PATCH v2 28/37] sandbox: Define a region for device priv/plat data Simon Glass
2021-02-03 16:43 ` [PATCH v2 29/37] dm: core: Use separate priv/plat data region Simon Glass
2021-02-03 16:43 ` [PATCH v2 30/37] x86: Define a region for device priv/plat data Simon Glass
2021-02-03 16:43 ` [PATCH v2 31/37] x86: apl: Fix the header order in pmc Simon Glass
2021-02-03 16:43 ` [PATCH v2 32/37] x86: apl: Tell of-platdata about a required header file Simon Glass
2021-02-03 16:43 ` [PATCH v2 33/37] x86: itss: Tidy up bind() for of-platdata-inst Simon Glass
2021-02-03 16:43 ` [PATCH v2 34/37] x86: Support a fake PCI device with of-platdata-inst Simon Glass
2021-02-03 16:43 ` [PATCH v2 35/37] x86: Don't include reset driver in SPL Simon Glass
2021-02-03 16:43 ` [PATCH v2 36/37] x86: coral: Drop ACPI properties from of-platdata Simon Glass
2021-02-03 16:43 ` [PATCH v2 37/37] x86: apl: Use read-only SPL and new of-platdata Simon Glass
2021-02-04  7:48 ` Heinrich Schuchardt [this message]
2021-02-04 15:08   ` [PATCH v2 00/37] dm: Implement OF_PLATDATA_INST in driver model (part E) Simon Glass

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