| * Samsung Exynos7 Clock Controller | |
| Exynos7 clock controller has various blocks which are instantiated | |
| independently from the device-tree. These clock controllers | |
| generate and supply clocks to various hardware blocks within | |
| the SoC. | |
| Each clock is assigned an identifier and client nodes can use | |
| this identifier to specify the clock which they consume. All | |
| available clocks are defined as preprocessor macros in | |
| dt-bindings/clock/exynos7-clk.h header and can be used in | |
| device tree sources. | |
| External clocks: | |
| There are several clocks that are generated outside the SoC. It | |
| is expected that they are defined using standard clock bindings | |
| with following clock-output-names: | |
| - "fin_pll" - PLL input clock from XXTI | |
| Required Properties for Clock Controller: | |
| - compatible: clock controllers will use one of the following | |
| compatible strings to indicate the clock controller | |
| functionality. | |
| - "samsung,exynos7-clock-topc" | |
| - "samsung,exynos7-clock-top0" | |
| - "samsung,exynos7-clock-top1" | |
| - "samsung,exynos7-clock-ccore" | |
| - "samsung,exynos7-clock-peric0" | |
| - "samsung,exynos7-clock-peric1" | |
| - "samsung,exynos7-clock-peris" | |
| - "samsung,exynos7-clock-fsys0" | |
| - "samsung,exynos7-clock-fsys1" | |
| - "samsung,exynos7-clock-mscl" | |
| - "samsung,exynos7-clock-aud" | |
| - reg: physical base address of the controller and the length of | |
| memory mapped region. | |
| - #clock-cells: should be 1. | |
| - clocks: list of clock identifiers which are fed as the input to | |
| the given clock controller. Please refer the next section to | |
| find the input clocks for a given controller. | |
| - clock-names: list of names of clocks which are fed as the input | |
| to the given clock controller. | |
| Input clocks for top0 clock controller: | |
| - fin_pll | |
| - dout_sclk_bus0_pll | |
| - dout_sclk_bus1_pll | |
| - dout_sclk_cc_pll | |
| - dout_sclk_mfc_pll | |
| - dout_sclk_aud_pll | |
| Input clocks for top1 clock controller: | |
| - fin_pll | |
| - dout_sclk_bus0_pll | |
| - dout_sclk_bus1_pll | |
| - dout_sclk_cc_pll | |
| - dout_sclk_mfc_pll | |
| Input clocks for ccore clock controller: | |
| - fin_pll | |
| - dout_aclk_ccore_133 | |
| Input clocks for peric0 clock controller: | |
| - fin_pll | |
| - dout_aclk_peric0_66 | |
| - sclk_uart0 | |
| Input clocks for peric1 clock controller: | |
| - fin_pll | |
| - dout_aclk_peric1_66 | |
| - sclk_uart1 | |
| - sclk_uart2 | |
| - sclk_uart3 | |
| - sclk_spi0 | |
| - sclk_spi1 | |
| - sclk_spi2 | |
| - sclk_spi3 | |
| - sclk_spi4 | |
| - sclk_i2s1 | |
| - sclk_pcm1 | |
| - sclk_spdif | |
| Input clocks for peris clock controller: | |
| - fin_pll | |
| - dout_aclk_peris_66 | |
| Input clocks for fsys0 clock controller: | |
| - fin_pll | |
| - dout_aclk_fsys0_200 | |
| - dout_sclk_mmc2 | |
| Input clocks for fsys1 clock controller: | |
| - fin_pll | |
| - dout_aclk_fsys1_200 | |
| - dout_sclk_mmc0 | |
| - dout_sclk_mmc1 | |
| Input clocks for aud clock controller: | |
| - fin_pll | |
| - fout_aud_pll |