Commit Graph

4 Commits

Author SHA1 Message Date
Dinh Nguyen
8cb289ed60 ARM: socfpga: dts: Add div-reg to the main_pll clocks
The mpu_clk, main_clk, and dbg_base_clk outputs from the main PLL go through a
pre-divider. Update socfpga.dtsi to represent those dividers for these
clocks.

Re-use the "div-reg" property that was used for the socfpga-gate-clock as this
is the same thing. Also update the documentation.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
2014-05-05 22:33:18 -05:00
Dinh Nguyen
044abbde7b clk: socfpga: Add a clk-phase property to the "altr,socfpga-gate-clk"
The clk-phase property is used to represent the 2 clock phase values that is
needed for the SD/MMC driver. Add a prepare function to the clk_ops, that will
use the syscon driver to set sdmmc_clk's phase shift that is located in the
system manager.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
---
v9: none
v8: Use degrees in the clk-phase binding property
v7: Add dts property to represent the clk phase of the sdmmc_clk. Add a
    prepare function to the gate clk that will toggle clock phase setting.
    Remove the "altr,socfpga-sdmmc-sdr-clk" clock type.
v6: Add a new clock type "altr,socfpga-sdmmc-sdr-clk" that will be used to
    set the phase shift settings.
v5: Use the "snps,dw-mshc" binding
v4: Use the sdmmc_clk prepare function to set the phase shift settings
v3: Not use the syscon driver because as of 3.13-rc1, the syscon driver is
    loaded after the clock driver.
v2: Use the syscon driver
2014-02-18 14:08:14 -08:00
Dinh Nguyen
a92b83af28 ARM: socfpga: dts: Add gate-clock bindings
Add bindings for "socfpga-gate-clk" clocks. These clocks directly feed
the peripherals.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Reviewed-by: Pavel Machek <pavel@denx.de>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Olof Johansson <olof@lixom.net>
Cc: Pavel Machek <pavel@denx.de>
CC: <linux@arm.linux.org.uk>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-11 16:35:00 -07:00
Dinh Nguyen
042000b003 ARM: socfpga: Add clock entries into device tree
Adds the main PLL clock groups for SOCFPGA into device tree file
so that the clock framework to query the clock and clock rates
appropriately.

$cat /sys/kernel/debug/clk/clk_summary
   clock                        enable_cnt  prepare_cnt  rate
---------------------------------------------------------------------
 osc1                           2           2            25000000
    sdram_pll                   0           0            400000000
       s2f_usr2_clk             0           0            66666666
       ddr_dq_clk               0           0            200000000
       ddr_2x_dqs_clk           0           0            400000000
       ddr_dqs_clk              0           0            200000000
    periph_pll                  2           2            500000000
       s2f_usr1_clk             0           0            50000000
       per_base_clk             4           4            100000000
       per_nand_mmc_clk         0           0            25000000
       per_qsi_clk              0           0            250000000
       emac1_clk                1           1            125000000
       emac0_clk                0           0            125000000
    main_pll                    1           1            1600000000
       cfg_s2f_usr0_clk         0           0            100000000
       main_nand_sdmmc_clk      0           0            100000000
       main_qspi_clk            0           0            400000000
       dbg_base_clk             0           0            400000000
       mainclk                  0           0            400000000
       mpuclk                   1           1            800000000
          smp_twd               1           1            200000000

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Reviewed-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-04-14 20:17:59 -07:00