This patch series brings the files from Linux kernel (SHA1: 5752b50477da
Linux 5.1.12 to provide clocks support as it is used on the Linux kernel
with Common Clock Framework [CCF] setup.
This series also fixes several problems with current clocks and provides
sandbox tests for functions added to clk-uclass.c file.
CCF impact to U-Boot size:
--------------------------
SPL U-Boot.img
Without CCF: 51 KiB 358 KiB
With CCF: 55 KiB 363 KiB
Size increase: 1.3% 7.2%
The SPL implementation is not yet optimized (no OF_PLATDATA, etc).
Repository:
https://github.com/lmajewski/u-boot-dfu/commits/CCF-v5
Applicable on top of u-boot/master:
SHA1: 77f6e2dd0551d8a825bab391a1bd6b838874bcd4
Travis-CI:
https://travis-ci.org/lmajewski/u-boot-dfu/builds/549603356
Changes in v6:
- Use dev->uclass_priv pointer to store pointer to clk
Changes in v5:
- s/U-boot/U-Boot/g
- Update Linux version to 5.1.12
- Add paragraph regarding sandbox CCF testing (common uclass code)
- Use long long to store rate value (to avoid int overflow and also return
errors correctly)
- Use u32 to avoid checkpatch warning
- s/U-boot/U-Boot/g
- Replace dev->driver_data with dev_get_clk_ptr() wrapper on uclass_priv
- Replace ulong with long long (to accommodate large freqs and return
errors)
- s/U-boot/U-Boot/g
- Check if the relevant code has changed between Linux tag v5.0-rc3 and
v5.1.12 (no changes - the version can be safely updated).
- Use imply CLK_IMX6Q in Kconfig for (SPL_)CCF
- Fix clk-fixed-factor implementation (kzalloc needed for correct Sandbox
operation)
- Fix gate2 implementation
- Use dev->uclass_priv instead of dev->driver_data to store back pointer
to the struct clk.
- Split and introduce earlier the clk-provider.h header file
Changes in v4:
- New patch
- Port some more Linux code to facilitate imx8 code porting (most notably
flags)
- Explicitly use container_of() based macro to provide struct clk in various
places (e.g. gate2, mux, etc)
Following patches has been squashed:
http://patchwork.ozlabs.org/patch/1093141/
http://patchwork.ozlabs.org/patch/1093142/
http://patchwork.ozlabs.org/patch/1093146/
Changes in v3:
- New patch
- The rate information is now cached into struct clk field
- The clk_get_parent() is used to get pointer to the parent struct clk
- Replace -ENODEV with -ENOENT
- Use **clkp instead of **c
- Replace dev->driver_data with dev_get_clk_ptr() wrapper on uclas_priv
Lukasz Majewski (18):
clk: doc: Add documentation entry for Common Clock Framework [CCF]
(i.MX)
dm: Fix documentation entry as there is no UCLASS_CLOCK uclass
clk: Remove clock ID check in .get_rate() of clk_fixed_*
clk: Extend struct clk to provide information regarding clock rate
clk: Extend struct clk to provide clock type agnostic flags
clk: Provide struct clk for fixed rate clock (clk_fixed_rate.c)
clk: Introduce clk-provider.h to store Common Clock Framework's
internals
dm: clk: Define clk_get_parent() for clk operations
dm: clk: Define clk_get_parent_rate() for clk operations
dm: clk: Define clk_get_by_id() for clk operations
clk: Port Linux common clock framework [CCF] for imx6q to U-boot (tag:
v5.1.12)
dm: clk: Extend clk_get_parent_rate() to support CLK_GET_RATE_NOCACHE
flag
dts: sandbox: Add 'osc' clock for Common Clock Framework [CCF] testing
clk: sandbox: Adjust clk-divider to emulate reading its value from HW
clk: sandbox: Adjust clk-mux.c to emulate reading divider value from
HW
clk: sandbox: Add sandbox test code for Common Clock Framework [CCF]
defconfig: sandbox: Enable SANDBOX_CLK_CCF to reuse generic CCF code
clk: Add MAINTAINERS entry for clocks (./drivers/clk/)
MAINTAINERS | 7 ++
arch/sandbox/dts/test.dts | 10 ++
configs/sandbox_defconfig | 1 +
configs/sandbox_flattree_defconfig | 1 +
doc/imx/clk/ccf.txt | 101 ++++++++++++++++++++
drivers/clk/Kconfig | 22 +++++
drivers/clk/Makefile | 3 +
drivers/clk/clk-divider.c | 155 +++++++++++++++++++++++++++++++
drivers/clk/clk-fixed-factor.c | 80 ++++++++++++++++
drivers/clk/clk-mux.c | 172 ++++++++++++++++++++++++++++++++++
drivers/clk/clk-uclass.c | 60 ++++++++++++
drivers/clk/clk.c | 57 ++++++++++++
drivers/clk/clk_fixed_factor.c | 3 -
drivers/clk/clk_fixed_rate.c | 8 +-
drivers/clk/clk_sandbox_ccf.c | 185 +++++++++++++++++++++++++++++++++++++
drivers/clk/imx/Kconfig | 16 ++++
drivers/clk/imx/Makefile | 2 +
drivers/clk/imx/clk-gate2.c | 103 +++++++++++++++++++++
drivers/clk/imx/clk-imx6q.c | 179 +++++++++++++++++++++++++++++++++++
drivers/clk/imx/clk-pfd.c | 90 ++++++++++++++++++
drivers/clk/imx/clk-pllv3.c | 82 ++++++++++++++++
drivers/clk/imx/clk.h | 69 ++++++++++++++
include/clk.h | 37 +++++++-
include/linux/clk-provider.h | 132 ++++++++++++++++++++++++++
include/sandbox-clk.h | 76 +++++++++++++++
test/dm/Makefile | 2 +-
test/dm/clk_ccf.c | 62 +++++++++++++
27 files changed, 1707 insertions(+), 8 deletions(-)
create mode 100644 doc/imx/clk/ccf.txt
create mode 100644 drivers/clk/clk-divider.c
create mode 100644 drivers/clk/clk-fixed-factor.c
create mode 100644 drivers/clk/clk-mux.c
create mode 100644 drivers/clk/clk.c
create mode 100644 drivers/clk/clk_sandbox_ccf.c
create mode 100644 drivers/clk/imx/clk-gate2.c
create mode 100644 drivers/clk/imx/clk-imx6q.c
create mode 100644 drivers/clk/imx/clk-pfd.c
create mode 100644 drivers/clk/imx/clk-pllv3.c
create mode 100644 drivers/clk/imx/clk.h
create mode 100644 include/linux/clk-provider.h
create mode 100644 include/sandbox-clk.h
create mode 100644 test/dm/clk_ccf.c
--
2.11.0
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
