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4999bb06cc
Add P-Bus Clock support to ast2500 clock driver. This is the clock used by I2C devices. Signed-off-by: Maxim Sloyko <maxims@google.com> Reviewed-by: Simon Glass <sjg@chromium.org>
187 lines
4.5 KiB
C
187 lines
4.5 KiB
C
/*
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* Copyright (c) 2016 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _ASM_ARCH_SCU_AST2500_H
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#define _ASM_ARCH_SCU_AST2500_H
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#define SCU_UNLOCK_VALUE 0x1688a8a8
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#define SCU_HWSTRAP_VGAMEM_MASK 3
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#define SCU_HWSTRAP_VGAMEM_SHIFT 2
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#define SCU_HWSTRAP_MAC1_RGMII (1 << 6)
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#define SCU_HWSTRAP_MAC2_RGMII (1 << 7)
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#define SCU_HWSTRAP_DDR4 (1 << 24)
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#define SCU_HWSTRAP_CLKIN_25MHZ (1 << 23)
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#define SCU_MPLL_DENUM_SHIFT 0
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#define SCU_MPLL_DENUM_MASK 0x1f
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#define SCU_MPLL_NUM_SHIFT 5
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#define SCU_MPLL_NUM_MASK 0xff
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#define SCU_MPLL_POST_SHIFT 13
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#define SCU_MPLL_POST_MASK 0x3f
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#define SCU_PCLK_DIV_SHIFT 23
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#define SCU_PCLK_DIV_MASK 7
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#define SCU_HPLL_DENUM_SHIFT 0
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#define SCU_HPLL_DENUM_MASK 0x1f
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#define SCU_HPLL_NUM_SHIFT 5
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#define SCU_HPLL_NUM_MASK 0xff
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#define SCU_HPLL_POST_SHIFT 13
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#define SCU_HPLL_POST_MASK 0x3f
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#define SCU_MISC2_UARTCLK_SHIFT 24
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#define SCU_MISC_UARTCLK_DIV13 (1 << 12)
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/*
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* SYSRESET is actually more like a Power register,
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* except that corresponding bit set to 1 means that
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* the peripheral is off.
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*/
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#define SCU_SYSRESET_XDMA (1 << 25)
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#define SCU_SYSRESET_MCTP (1 << 24)
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#define SCU_SYSRESET_ADC (1 << 23)
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#define SCU_SYSRESET_JTAG (1 << 22)
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#define SCU_SYSRESET_MIC (1 << 18)
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#define SCU_SYSRESET_SDIO (1 << 16)
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#define SCU_SYSRESET_USB11HOST (1 << 15)
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#define SCU_SYSRESET_USBHUB (1 << 14)
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#define SCU_SYSRESET_CRT (1 << 13)
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#define SCU_SYSRESET_MAC2 (1 << 12)
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#define SCU_SYSRESET_MAC1 (1 << 11)
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#define SCU_SYSRESET_PECI (1 << 10)
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#define SCU_SYSRESET_PWM (1 << 9)
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#define SCU_SYSRESET_PCI_VGA (1 << 8)
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#define SCU_SYSRESET_2D (1 << 7)
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#define SCU_SYSRESET_VIDEO (1 << 6)
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#define SCU_SYSRESET_LPC (1 << 5)
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#define SCU_SYSRESET_HAC (1 << 4)
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#define SCU_SYSRESET_USBHID (1 << 3)
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#define SCU_SYSRESET_I2C (1 << 2)
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#define SCU_SYSRESET_AHB (1 << 1)
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#define SCU_SYSRESET_SDRAM_WDT (1 << 0)
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/* Bits 16-27 in the register control pin functions for I2C devices 3-14 */
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#define SCU_PINMUX_CTRL5_I2C (1 << 16)
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/*
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* The values are grouped by function, not by register.
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* They are actually scattered across multiple loosely related registers.
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*/
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#define SCU_PIN_FUN_MAC1_MDC (1 << 30)
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#define SCU_PIN_FUN_MAC1_MDIO (1 << 31)
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#define SCU_PIN_FUN_MAC1_PHY_LINK (1 << 0)
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#define SCU_PIN_FUN_MAC2_MDIO (1 << 2)
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#define SCU_PIN_FUN_MAC2_PHY_LINK (1 << 1)
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#define SCU_PIN_FUN_SCL1 (1 << 12)
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#define SCU_PIN_FUN_SCL2 (1 << 14)
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#define SCU_PIN_FUN_SDA1 (1 << 13)
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#define SCU_PIN_FUN_SDA2 (1 << 15)
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#ifndef __ASSEMBLY__
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struct ast2500_clk_priv {
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struct ast2500_scu *scu;
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};
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struct ast2500_scu {
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u32 protection_key;
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u32 sysreset_ctrl1;
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u32 clk_sel1;
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u32 clk_stop_ctrl1;
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u32 freq_counter_ctrl;
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u32 freq_counter_cmp;
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u32 intr_ctrl;
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u32 d2_pll_param;
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u32 m_pll_param;
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u32 h_pll_param;
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u32 d_pll_param;
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u32 misc_ctrl1;
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u32 pci_config[3];
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u32 sysreset_status;
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u32 vga_handshake[2];
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u32 mac_clk_delay;
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u32 misc_ctrl2;
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u32 vga_scratch[8];
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u32 hwstrap;
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u32 rng_ctrl;
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u32 rng_data;
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u32 rev_id;
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u32 pinmux_ctrl[6];
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u32 reserved0;
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u32 extrst_sel;
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u32 pinmux_ctrl1[4];
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u32 reserved1[2];
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u32 mac_clk_delay_100M;
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u32 mac_clk_delay_10M;
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u32 wakeup_enable;
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u32 wakeup_control;
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u32 reserved2[3];
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u32 sysreset_ctrl2;
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u32 clk_sel2;
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u32 clk_stop_ctrl2;
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u32 freerun_counter;
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u32 freerun_counter_ext;
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u32 clk_duty_meas_ctrl;
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u32 clk_duty_meas_res;
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u32 reserved3[4];
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/* The next registers are not key-protected */
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struct ast2500_cpu2 {
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u32 ctrl;
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u32 base_addr[9];
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u32 cache_ctrl;
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} cpu2;
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u32 reserved4;
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u32 d_pll_ext_param[3];
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u32 d2_pll_ext_param[3];
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u32 mh_pll_ext_param;
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u32 reserved5;
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u32 chip_id[2];
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u32 reserved6[2];
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u32 uart_clk_ctrl;
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u32 reserved7[7];
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u32 pcie_config;
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u32 mmio_decode;
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u32 reloc_ctrl_decode[2];
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u32 mailbox_addr;
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u32 shared_sram_decode[2];
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u32 bmc_rev_id;
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u32 reserved8;
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u32 bmc_device_id;
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u32 reserved9[13];
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u32 clk_duty_sel;
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};
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/**
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* ast_get_clk() - get a pointer to Clock Driver
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*
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* @devp, OUT - pointer to Clock Driver
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* @return zero on success, error code (< 0) otherwise.
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*/
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int ast_get_clk(struct udevice **devp);
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/**
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* ast_get_scu() - get a pointer to SCU registers
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*
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* @return pointer to struct ast2500_scu on success, ERR_PTR otherwise
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*/
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void *ast_get_scu(void);
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/**
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* ast_scu_unlock() - unlock protected registers
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*
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* @scu, pointer to ast2500_scu
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*/
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void ast_scu_unlock(struct ast2500_scu *scu);
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/**
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* ast_scu_lock() - lock protected registers
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*
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* @scu, pointer to ast2500_scu
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*/
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void ast_scu_lock(struct ast2500_scu *scu);
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_ARCH_SCU_AST2500_H */
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