1a0483d2a4
This patch adds platform data and DT bindings to allow to overwrite the stored disabled state for each clock output. Signed-off-by: Marek Belisko <marek.belisko@streamunlimited.com> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
133 lines
4 KiB
C
133 lines
4 KiB
C
/*
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* Si5351A/B/C programmable clock generator platform_data.
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*/
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#ifndef __LINUX_PLATFORM_DATA_SI5351_H__
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#define __LINUX_PLATFORM_DATA_SI5351_H__
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struct clk;
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/**
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* enum si5351_variant - SiLabs Si5351 chip variant
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* @SI5351_VARIANT_A: Si5351A (8 output clocks, XTAL input)
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* @SI5351_VARIANT_A3: Si5351A MSOP10 (3 output clocks, XTAL input)
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* @SI5351_VARIANT_B: Si5351B (8 output clocks, XTAL/VXCO input)
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* @SI5351_VARIANT_C: Si5351C (8 output clocks, XTAL/CLKIN input)
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*/
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enum si5351_variant {
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SI5351_VARIANT_A = 1,
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SI5351_VARIANT_A3 = 2,
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SI5351_VARIANT_B = 3,
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SI5351_VARIANT_C = 4,
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};
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/**
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* enum si5351_pll_src - Si5351 pll clock source
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* @SI5351_PLL_SRC_DEFAULT: default, do not change eeprom config
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* @SI5351_PLL_SRC_XTAL: pll source clock is XTAL input
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* @SI5351_PLL_SRC_CLKIN: pll source clock is CLKIN input (Si5351C only)
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*/
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enum si5351_pll_src {
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SI5351_PLL_SRC_DEFAULT = 0,
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SI5351_PLL_SRC_XTAL = 1,
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SI5351_PLL_SRC_CLKIN = 2,
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};
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/**
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* enum si5351_multisynth_src - Si5351 multisynth clock source
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* @SI5351_MULTISYNTH_SRC_DEFAULT: default, do not change eeprom config
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* @SI5351_MULTISYNTH_SRC_VCO0: multisynth source clock is VCO0
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* @SI5351_MULTISYNTH_SRC_VCO1: multisynth source clock is VCO1/VXCO
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*/
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enum si5351_multisynth_src {
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SI5351_MULTISYNTH_SRC_DEFAULT = 0,
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SI5351_MULTISYNTH_SRC_VCO0 = 1,
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SI5351_MULTISYNTH_SRC_VCO1 = 2,
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};
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/**
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* enum si5351_clkout_src - Si5351 clock output clock source
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* @SI5351_CLKOUT_SRC_DEFAULT: default, do not change eeprom config
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* @SI5351_CLKOUT_SRC_MSYNTH_N: clkout N source clock is multisynth N
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* @SI5351_CLKOUT_SRC_MSYNTH_0_4: clkout N source clock is multisynth 0 (N<4)
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* or 4 (N>=4)
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* @SI5351_CLKOUT_SRC_XTAL: clkout N source clock is XTAL
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* @SI5351_CLKOUT_SRC_CLKIN: clkout N source clock is CLKIN (Si5351C only)
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*/
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enum si5351_clkout_src {
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SI5351_CLKOUT_SRC_DEFAULT = 0,
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SI5351_CLKOUT_SRC_MSYNTH_N = 1,
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SI5351_CLKOUT_SRC_MSYNTH_0_4 = 2,
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SI5351_CLKOUT_SRC_XTAL = 3,
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SI5351_CLKOUT_SRC_CLKIN = 4,
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};
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/**
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* enum si5351_drive_strength - Si5351 clock output drive strength
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* @SI5351_DRIVE_DEFAULT: default, do not change eeprom config
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* @SI5351_DRIVE_2MA: 2mA clock output drive strength
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* @SI5351_DRIVE_4MA: 4mA clock output drive strength
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* @SI5351_DRIVE_6MA: 6mA clock output drive strength
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* @SI5351_DRIVE_8MA: 8mA clock output drive strength
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*/
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enum si5351_drive_strength {
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SI5351_DRIVE_DEFAULT = 0,
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SI5351_DRIVE_2MA = 2,
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SI5351_DRIVE_4MA = 4,
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SI5351_DRIVE_6MA = 6,
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SI5351_DRIVE_8MA = 8,
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};
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/**
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* enum si5351_disable_state - Si5351 clock output disable state
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* @SI5351_DISABLE_DEFAULT: default, do not change eeprom config
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* @SI5351_DISABLE_LOW: CLKx is set to a LOW state when disabled
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* @SI5351_DISABLE_HIGH: CLKx is set to a HIGH state when disabled
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* @SI5351_DISABLE_FLOATING: CLKx is set to a FLOATING state when
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* disabled
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* @SI5351_DISABLE_NEVER: CLKx is NEVER disabled
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*/
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enum si5351_disable_state {
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SI5351_DISABLE_DEFAULT = 0,
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SI5351_DISABLE_LOW,
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SI5351_DISABLE_HIGH,
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SI5351_DISABLE_FLOATING,
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SI5351_DISABLE_NEVER,
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};
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/**
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* struct si5351_clkout_config - Si5351 clock output configuration
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* @clkout: clkout number
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* @multisynth_src: multisynth source clock
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* @clkout_src: clkout source clock
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* @pll_master: if true, clkout can also change pll rate
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* @drive: output drive strength
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* @rate: initial clkout rate, or default if 0
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*/
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struct si5351_clkout_config {
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enum si5351_multisynth_src multisynth_src;
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enum si5351_clkout_src clkout_src;
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enum si5351_drive_strength drive;
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enum si5351_disable_state disable_state;
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bool pll_master;
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unsigned long rate;
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};
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/**
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* struct si5351_platform_data - Platform data for the Si5351 clock driver
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* @variant: Si5351 chip variant
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* @clk_xtal: xtal input clock
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* @clk_clkin: clkin input clock
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* @pll_src: array of pll source clock setting
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* @clkout: array of clkout configuration
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*/
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struct si5351_platform_data {
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enum si5351_variant variant;
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struct clk *clk_xtal;
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struct clk *clk_clkin;
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enum si5351_pll_src pll_src[2];
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struct si5351_clkout_config clkout[8];
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};
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#endif
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