Commit graph

4 commits

Author SHA1 Message Date
Peng Fan
4b044082c1 clk: mux: add set parent support
Add set parent support for clk mux

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2019-07-31 09:20:51 +02:00
Peng Fan
5b27ff8986 clk: use clk_dev_binded
Preparing to support composite clk.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2019-07-31 09:20:51 +02:00
Lukasz Majewski
5da0095e3a clk: sandbox: Adjust clk-mux.c to emulate reading divider value from HW
The generic mux clock code for CCF requires reading the clock multiplexer
value from HW registers. As sandbox by design has readl() as no-op it was
necessary to provide this value in the other way.

The new field in the mux structure (accessible only when sandbox is run)
has been introduced for this purpose.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
2019-07-19 14:50:30 +02:00
Lukasz Majewski
1d7993d1d0 clk: Port Linux common clock framework [CCF] for imx6q to U-boot (tag: v5.1.12)
This patch brings the files from Linux kernel (linux-stable/linux-5.1.y
SHA1: 5752b50477da)to provide clocks support as it is used on the Linux
kernel with Common Clock Framework [CCF] setup.

The directory structure has been preserved. The ported code only supports
reading information from PLL, MUX, Divider, etc and enabling/disabling
the clocks USDHCx/ECSPIx depending on used bus. Moreover, it is agnostic
to the alias numbering as the information about the clock is read from the
device tree.

One needs to pay attention to the comments indicating necessary for U-Boot's
driver model changes.

If needed, the code can be extended to support the "set" part of the clock
management.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
2019-07-19 14:50:30 +02:00