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>
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 96969b9..9c2b284 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -46,6 +46,20 @@
help
Enable this to support the clocks
+config SPL_CLK_CCF
+ bool "SPL Common Clock Framework [CCF] support "
+ depends on SPL_CLK_IMX6Q
+ help
+ Enable this option if you want to (re-)use the Linux kernel's Common
+ Clock Framework [CCF] code in U-Boot's SPL.
+
+config CLK_CCF
+ bool "Common Clock Framework [CCF] support "
+ depends on CLK_IMX6Q
+ help
+ Enable this option if you want to (re-)use the Linux kernel's Common
+ Clock Framework [CCF] code in U-Boot's clock driver.
+
config CLK_STM32F
bool "Enable clock driver support for STM32F family"
depends on CLK && (STM32F7 || STM32F4)