[RFC 00/14] Generic clk for Orion platforms.
andrew at lunn.ch
Tue Mar 6 01:30:56 EST 2012
This patch set starts the process of changing Orion based platforms to
use the generic clk framework. The first patch fixes compile problems
with the framework, and is expected to be dropped once fixed upstream.
Then clks are added. This is a fixed rate clk for tclk and for
kirkwood, most of the gated clocks also get a clk. The following
patches then modified the drivers to make use of these clocks,
getting, prepareing, enabling at probe time, and disableing,
unprepareing, and putting at remove time. Rather than pass the clock
frequency as platform_data, the driver now uses clk_get_rate(). This
results in some platform_data structures becoming redundant, and so
0) Cleanup the white space changes, and hunks in the wrong patches.
1) PCIe needs adopting to use clks.
2) Strip out all references to kirkwood_clk_ctrl
3) Find a solution for turning off unused clks - Probably needs
framework support, which Mike has already suggested.
4) Find a solution for tuning off unused SATA and PCIe PHYs. Maybe
use the unprepare() method, but the current basic clk providers
don't support this.
If we are willing to accept a regression in power usage, we could skip
3) and 4) for the moment in order to get this code into use. That
would help the device tree work which benefits from not having to deal
with clock frequencies when setting up device driver bindings.
Boot tested on kirkwood. No testing what so ever on other Orion
Andrew Lunn (14):
[clk] Fix compile errors in DEFINE_CLK_GATE()
ARM: Orion: Add clocks using the generic clk infrastructure.
Arm: Orion: spi: Add clk/clkdev support.
orion: spi: remove enable_clock_fix which is not used
Arm: Orion: eth: Add clk/clkdev support.
ARM: Orion: wdt: Add clk/clkdev support
ARM: Orion: uart: Get the clock rate via clk_get_rate().
ARM: Kirkwood: Remove tclk from kirkwood_asoc_platform_data.
MV SATA: Add per channel clk/clkdev support.
[Orion ehci] Add support for enabling clocks
[Orion nand] Add support for clk, if there is one.
[Orion sdio] Add support for clk.
[Orion crypto] Add support for clk
[Orion xor] Add support for clk
arch/arm/Kconfig | 3 +
arch/arm/mach-dove/common.c | 37 ++++---
arch/arm/mach-dove/dove-db-setup.c | 1 -
arch/arm/mach-kirkwood/common.c | 119 +++++++++++++++++----
arch/arm/mach-kirkwood/include/mach/bridge-regs.h | 16 +++
arch/arm/mach-kirkwood/mv88f6281gtw_ge-setup.c | 1 -
arch/arm/mach-kirkwood/rd88f6192-nas-setup.c | 1 -
arch/arm/mach-kirkwood/t5325-setup.c | 1 -
arch/arm/mach-kirkwood/tsx1x-common.c | 1 -
arch/arm/mach-mv78xx0/common.c | 44 +++++---
arch/arm/mach-orion5x/common.c | 26 ++++-
arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c | 1 -
arch/arm/plat-orion/common.c | 88 ++++++++-------
arch/arm/plat-orion/include/plat/audio.h | 1 -
arch/arm/plat-orion/include/plat/common.h | 26 +++--
arch/arm/plat-orion/include/plat/orion_wdt.h | 18 ---
drivers/ata/sata_mv.c | 43 +++++++-
drivers/clk/clk.c | 1 +
drivers/crypto/mv_cesa.c | 15 +++
drivers/dma/mv_xor.c | 16 +++
drivers/dma/mv_xor.h | 1 +
drivers/mmc/host/mvsdio.c | 14 +++
drivers/mtd/nand/orion_nand.c | 18 +++
drivers/net/ethernet/marvell/mv643xx_eth.c | 46 ++++++--
drivers/spi/spi-orion.c | 37 +++++--
drivers/usb/host/ehci-orion.c | 16 +++
drivers/watchdog/orion_wdt.c | 18 ++-
include/linux/clk-private.h | 4 +-
include/linux/mv643xx_eth.h | 1 -
include/linux/spi/orion_spi.h | 18 ---
30 files changed, 443 insertions(+), 189 deletions(-)
delete mode 100644 arch/arm/plat-orion/include/plat/orion_wdt.h
delete mode 100644 include/linux/spi/orion_spi.h
More information about the linux-arm-kernel