[PATCH v2 00/24] add COMMON_CLK support for PowerPC MPC512x
Gerhard Sittig
gsi at denx.de
Fri Jul 19 03:00:31 EST 2013
this series introduces support for the common clock framework (CCF,
COMMON_CLK Kconfig option) in the PowerPC based MPC512x platform
although the series does touch several subsystems -- serial, spi, net
(can, fs_enet), mtd (nfc), usb, i2c, media (viu), and dts -- all of the
patches are strictly clock related
it appears most appropriate to take this series through either the clk
or the powerpc trees after it has passed review and other subsystem
maintainers ACKed the clock setup related driver modifications
the series passes 'checkpatch.pl --strict' except for one warning which
cannot get resolved, since that either breaks compilation (the data type
is preset by the clk-provider.h API) or requires a cast which shadows
real mismatches:
WARNING: static const char * array should probably be static const char * const
#413: FILE: arch/powerpc/platforms/512x/clock-commonclk.c:335:
+static const char *parent_names_mux0[] = {
total: 0 errors, 1 warnings, 0 checks, 836 lines checked
each step in the series was build and run tested (with a display that is
attached to the DIU as well as SPI, with an SPI attached NOR flash, with
multiple UART ports such that one is not the boot console, with EEPROMs
attached to I2C, with an SD card, booting from network)
changes in v2:
- cleanup of the UART and SPI clock handling before the introduction of
common clock support for the platform, as incomplete clock handling
becomes fatal or more dangerous later (which in turn changes the
context of the "device tree lookup only" followup patch later)
- reordered the sequence of patches to keep the serial communication
related parts together (UART, SPI, and PSC FIFO changes after common
clock support was introduced)
- updated commit messages for the clock API use cleanup in the serial
communication drivers, updated comments and reworded commit messages
in the core clock driver to expand on the pre-enable workaround and
clkdev registration
- keep a reference to the PSC FIFO clock during use instead of looking
up the clock again in the uninit() routine
- remove the clkdev.h header file inclusion directive with the removal
of the clkdev registration call
Gerhard Sittig (24):
spi: mpc512x: cleanup clock API use
serial: mpc512x: cleanup clock API use
mtd: mpc5121_nfc: prepare clocks before enabling them
powerpc: mpc512x: array decl for MCLK registers in CCM
clk: wrap I/O access for improved portability
dts: mpc512x: prepare for preprocessor support
dts: mpc512x: introduce dt-bindings/clock/ header
dts: mpc512x: add clock related device tree specs
clk: mpc512x: introduce COMMON_CLK for MPC512x
dts: mpc512x: add clock specs for client lookups
spi: mpc512x: remove now obsolete clock lookup name
serial: mpc512x: remove now obsolete clock lookup name
clk: mpc512x: remove now obsolete clkdev registration
serial: mpc512x: setup the PSC FIFO clock as well
net: can: mscan: add a comment on reg to idx mapping
net: can: mscan: make mpc512x code use common clock
powerpc/mpc512x: improve DIU related clock setup
i2c: mpc: OF clock lookup for MPC512x
USB: fsl-mph-dr-of: OF clock lookup, prepare and enable
fs_enet: OF clock lookup (non-fatal), prepare and enable
[media] fsl-viu: OF clock lookup, prepare before enable
powerpc/fsl-pci: OF clock lookup, prepare before enable
clk: mpc512x: switch to COMMON_CLK, remove PPC_CLOCK
net: can: mscan: remove MPC512x non-COMMON_CLK code path
arch/powerpc/boot/dts/ac14xx.dts | 9 +-
arch/powerpc/boot/dts/include/dt-bindings | 1 +
arch/powerpc/boot/dts/mpc5121.dtsi | 94 ++-
arch/powerpc/boot/dts/mpc5121ads.dts | 2 +-
arch/powerpc/boot/dts/pdm360ng.dts | 2 +-
arch/powerpc/include/asm/mpc5121.h | 18 +-
arch/powerpc/platforms/512x/Kconfig | 2 +-
arch/powerpc/platforms/512x/Makefile | 3 +-
arch/powerpc/platforms/512x/clock-commonclk.c | 761 ++++++++++++++++++++
arch/powerpc/platforms/512x/clock.c | 753 -------------------
arch/powerpc/platforms/512x/mpc512x_shared.c | 165 +++--
arch/powerpc/sysdev/fsl_pci.c | 15 +
drivers/clk/clk-divider.c | 6 +-
drivers/clk/clk-gate.c | 6 +-
drivers/clk/clk-mux.c | 6 +-
drivers/i2c/busses/i2c-mpc.c | 9 +
drivers/media/platform/fsl-viu.c | 12 +-
drivers/mtd/nand/mpc5121_nfc.c | 4 +-
drivers/net/can/mscan/mpc5xxx_can.c | 234 +++---
.../net/ethernet/freescale/fs_enet/fs_enet-main.c | 27 +-
drivers/spi/spi-mpc512x-psc.c | 45 +-
drivers/tty/serial/mpc52xx_uart.c | 137 +++-
drivers/usb/host/fsl-mph-dr-of.c | 24 +-
include/dt-bindings/clock/mpc512x-clock.h | 59 ++
include/linux/clk-provider.h | 33 +
include/linux/fs_enet_pd.h | 3 +
26 files changed, 1392 insertions(+), 1038 deletions(-)
create mode 120000 arch/powerpc/boot/dts/include/dt-bindings
create mode 100644 arch/powerpc/platforms/512x/clock-commonclk.c
delete mode 100644 arch/powerpc/platforms/512x/clock.c
create mode 100644 include/dt-bindings/clock/mpc512x-clock.h
# uname -srm
Linux 3.11.0-rc1-00024-g96ff9fe ppc
# cat /sys/kernel/debug/clk/clk_summary
clock enable_cnt prepare_cnt rate
---------------------------------------------------------------------
ac97 0 0 24567000
spdif_rx_in 0 0 0
spdif_tx_in 0 0 0
psc_mclk_in 0 0 25000000
dummy 1 1 0
osc 1 1 25000000
ref 1 1 25000000
sys 10 10 320000000
spdif-mux0 0 0 320000000
spdif-en0 0 0 320000000
spdif_mclk_div 0 0 80000000
spdif_mclk_out 0 0 80000000
spdif_mclk 0 0 80000000
mscan3-mux0 1 1 320000000
mscan3-en0 1 1 320000000
mscan3_mclk_div 1 1 80000000
mscan3_mclk_out 1 1 80000000
mscan3_mclk 1 1 80000000
mscan2-mux0 1 1 320000000
mscan2-en0 1 1 320000000
mscan2_mclk_div 1 1 80000000
mscan2_mclk_out 1 1 80000000
mscan2_mclk 1 1 80000000
mscan1-mux0 1 1 320000000
mscan1-en0 1 1 320000000
mscan1_mclk_div 1 1 16000000
mscan1_mclk_out 1 1 16000000
mscan1_mclk 2 2 16000000
mscan0-mux0 1 1 320000000
mscan0-en0 1 1 320000000
mscan0_mclk_div 1 1 16000000
mscan0_mclk_out 1 1 16000000
mscan0_mclk 2 2 16000000
psc11-mux0 0 0 320000000
psc11-en0 0 0 320000000
psc11_mclk_div 0 0 80000000
psc11_mclk_out 0 0 80000000
psc11_mclk 0 0 80000000
psc10-mux0 0 0 320000000
psc10-en0 0 0 320000000
psc10_mclk_div 0 0 80000000
psc10_mclk_out 0 0 80000000
psc10_mclk 0 0 80000000
psc9-mux0 0 0 320000000
psc9-en0 0 0 320000000
psc9_mclk_div 0 0 80000000
psc9_mclk_out 0 0 80000000
psc9_mclk 0 0 80000000
psc8-mux0 0 0 320000000
psc8-en0 0 0 320000000
psc8_mclk_div 0 0 80000000
psc8_mclk_out 0 0 80000000
psc8_mclk 0 0 80000000
psc7-mux0 1 1 320000000
psc7-en0 1 1 320000000
psc7_mclk_div 1 1 80000000
psc7_mclk_out 1 1 80000000
psc7_mclk 1 1 80000000
psc6-mux0 0 0 320000000
psc6-en0 0 0 320000000
psc6_mclk_div 0 0 80000000
psc6_mclk_out 0 0 80000000
psc6_mclk 0 0 80000000
psc5-mux0 1 1 320000000
psc5-en0 1 1 320000000
psc5_mclk_div 1 1 80000000
psc5_mclk_out 1 1 80000000
psc5_mclk 1 1 80000000
psc4-mux0 1 1 320000000
psc4-en0 1 1 320000000
psc4_mclk_div 1 1 80000000
psc4_mclk_out 1 1 80000000
psc4_mclk 1 1 80000000
psc3-mux0 1 1 320000000
psc3-en0 1 1 320000000
psc3_mclk_div 1 1 80000000
psc3_mclk_out 1 1 80000000
psc3_mclk 2 2 80000000
psc2-mux0 0 0 320000000
psc2-en0 0 0 320000000
psc2_mclk_div 0 0 80000000
psc2_mclk_out 0 0 80000000
psc2_mclk 0 0 80000000
psc1-mux0 0 0 320000000
psc1-en0 0 0 320000000
psc1_mclk_div 0 0 80000000
psc1_mclk_out 0 0 80000000
psc1_mclk 0 0 80000000
psc0-mux0 0 0 320000000
psc0-en0 0 0 320000000
psc0_mclk_div 0 0 80000000
psc0_mclk_out 0 0 80000000
psc0_mclk 0 0 80000000
ddr-ug 1 1 160000000
ddr 1 1 160000000
csb 4 4 160000000
viu 0 0 160000000
iim 0 0 160000000
usb2 0 0 160000000
usb1 0 0 160000000
axe 0 0 160000000
pci-ug 0 0 26666666
pci 0 0 26666666
mbx-bus-ug 0 0 80000000
mbx-bus 0 0 80000000
mbx-ug 0 0 80000000
mbx 0 0 80000000
mbx-3d-ug 0 0 80000000
mbx-3d 0 0 80000000
e300 1 1 400000000
diu-x4 1 1 640000000
diu-ug 1 1 2509803
diu 2 2 2509803
sdhc-x4 1 1 640000000
sdhc-ug 1 1 53333333
sdhc-2 0 0 53333333
sdhc 1 1 53333333
ips 7 7 80000000
i2c 3 3 80000000
mem 1 1 80000000
fec 1 1 80000000
sata 0 0 80000000
psc-fifo 1 1 80000000
pata 0 0 80000000
lpc-ug 1 1 40000000
lpc 1 1 40000000
nfc-ug 0 0 40000000
nfc 0 0 40000000
--
1.7.10.4
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