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| author | Samuel Holland <samuel@sholland.org> | 2021-11-19 04:33:37 +0100 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2021-11-23 10:29:05 +0100 |
| commit | 91389c390521a02ecfb91270f5b9d7fae4312ae5 (patch) | |
| tree | c5268d16cf07a3710ed388abf7b3f5fd85a25c9b /drivers/mmc | |
| parent | clk: sunxi-ng: Convert early providers to platform drivers (diff) | |
| download | linux-91389c390521a02ecfb91270f5b9d7fae4312ae5.tar.xz linux-91389c390521a02ecfb91270f5b9d7fae4312ae5.zip | |
clk: sunxi-ng: Allow the CCU core to be built as a module
Like the individual CCU drivers, it can be beneficial for memory
consumption of cross-platform configurations to only load the CCU core
on the relevant platform. For example, a generic arm64 kernel sees the
following improvement when building the CCU core and drivers as modules:
before:
text data bss dec hex filename
13882360 5251670 360800 19494830 12977ae vmlinux
after:
text data bss dec hex filename
13734787 5086442 360800 19182029 124b1cd vmlinux
So the result is a 390KB total reduction in kernel image size.
The one early clock provider (sun5i) requires the core to be built in.
Now that loading the MMC driver will trigger loading the CCU core, the
MMC timing mode functions do not need a compile-time fallback.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20211119033338.25486-5-samuel@sholland.org
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 5af8494c31b5..52b0b27a6839 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -966,6 +966,7 @@ config MMC_REALTEK_USB config MMC_SUNXI tristate "Allwinner sunxi SD/MMC Host Controller support" depends on ARCH_SUNXI || COMPILE_TEST + depends on SUNXI_CCU help This selects support for the SD/MMC Host Controller on Allwinner sunxi SoCs. |