[U-Boot,3/3] arm: am33xx: Add support for mulitiple PLL input frequencies

Message ID	20170502141026.27093-4-lokeshvutla@ti.com
State	Superseded
Delegated to:	Tom Rini
Headers	show Return-Path: <u-boot-bounces@lists.denx.de> From: Lokesh Vutla <lokeshvutla@ti.com> To: Tom Rini <trini@konsulko.com>, <u-boot@lists.denx.de> Date: Tue, 2 May 2017 19:40:26 +0530 Message-ID: <20170502141026.27093-4-lokeshvutla@ti.com> In-Reply-To: <20170502141026.27093-1-lokeshvutla@ti.com> References: <20170502141026.27093-1-lokeshvutla@ti.com> MIME-Version: 1.0 Cc: Tero Kristo <t-kristo@ti.com> Subject: [U-Boot] [PATCH 3/3] arm: am33xx: Add support for mulitiple PLL input frequencies Precedence: list Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" <u-boot-bounces@lists.denx.de>

diff --git a/arch/arm/include/asm/arch-am33xx/clock.h b/arch/arm/include/asm/arch-am33xx/clock.h index acf3fd55a8..19ccf5c8db 100644 --- a/arch/arm/include/asm/arch-am33xx/clock.h +++ b/arch/arm/include/asm/arch-am33xx/clock.h @@ -12,6 +12,7 @@ #define _CLOCKS_H_ #include <asm/arch/clocks_am33xx.h> +#include <asm/arch/hardware.h> #ifdef CONFIG_TI81XX #include <asm/arch/clock_ti81xx.h> @@ -103,6 +104,12 @@ extern const struct dpll_regs dpll_mpu_regs; extern const struct dpll_regs dpll_core_regs; extern const struct dpll_regs dpll_per_regs; extern const struct dpll_regs dpll_ddr_regs; +extern const struct dpll_params dpll_mpu_opp[NUM_CRYSTAL_FREQ][NUM_OPPS]; +extern const struct dpll_params dpll_core_1000MHz[NUM_CRYSTAL_FREQ]; +extern const struct dpll_params dpll_per_192MHz[NUM_CRYSTAL_FREQ]; +extern const struct dpll_params dpll_ddr2_266MHz[NUM_CRYSTAL_FREQ]; +extern const struct dpll_params dpll_ddr3_303MHz[NUM_CRYSTAL_FREQ]; +extern const struct dpll_params dpll_ddr3_400MHz[NUM_CRYSTAL_FREQ]; extern struct cm_wkuppll *const cmwkup; diff --git a/arch/arm/include/asm/arch-am33xx/clocks_am33xx.h b/arch/arm/include/asm/arch-am33xx/clocks_am33xx.h index 5f11c72323..abbd5adfdc 100644 --- a/arch/arm/include/asm/arch-am33xx/clocks_am33xx.h +++ b/arch/arm/include/asm/arch-am33xx/clocks_am33xx.h @@ -31,6 +31,8 @@ #define CM_DLL_CTRL_NO_OVERRIDE 0x0 #define CM_DLL_READYST 0x4 +#define NUM_OPPS 6 + extern void enable_dmm_clocks(void); extern const struct dpll_params dpll_core_opp100; extern struct dpll_params dpll_mpu_opp100; diff --git a/arch/arm/include/asm/arch-am33xx/hardware.h b/arch/arm/include/asm/arch-am33xx/hardware.h index dd950e5ac4..3437e6116d 100644 --- a/arch/arm/include/asm/arch-am33xx/hardware.h +++ b/arch/arm/include/asm/arch-am33xx/hardware.h @@ -61,5 +61,18 @@ /* CPSW Config space */ #define CPSW_BASE 0x4A100000 +/* Control status register */ +#define CTRL_CRYSTAL_FREQ_SRC_MASK (1 << 31) +#define CTRL_CRYSTAL_FREQ_SRC_SHIFT 31 +#define CTRL_CRYSTAL_FREQ_SELECTION_MASK (0x3 << 29) +#define CTRL_CRYSTAL_FREQ_SELECTION_SHIFT 29 +#define CTRL_SYSBOOT_15_14_MASK (0x3 << 22) +#define CTRL_SYSBOOT_15_14_SHIFT 22 + +#define CTRL_CRYSTAL_FREQ_SRC_SYSBOOT 0x0 +#define CTRL_CRYSTAL_FREQ_SRC_EFUSE 0x1 + +#define NUM_CRYSTAL_FREQ 0x4 + int clk_get(int clk); #endif /* __AM33XX_HARDWARE_H */ diff --git a/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h b/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h index a7da6b5cfd..af69ac6f2c 100644 --- a/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h +++ b/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h @@ -85,19 +85,6 @@ #define USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960 (1 << 8) #define USBPHY0_CLKCTRL_OPTFCLKEN_CLK32K (1 << 8) -/* Control status register */ -#define CTRL_CRYSTAL_FREQ_SRC_MASK (1 << 31) -#define CTRL_CRYSTAL_FREQ_SRC_SHIFT 31 -#define CTRL_CRYSTAL_FREQ_SELECTION_MASK (0x3 << 29) -#define CTRL_CRYSTAL_FREQ_SELECTION_SHIFT 29 -#define CTRL_SYSBOOT_15_14_MASK (0x3 << 22) -#define CTRL_SYSBOOT_15_14_SHIFT 22 - -#define CTRL_CRYSTAL_FREQ_SRC_SYSBOOT 0x0 -#define CTRL_CRYSTAL_FREQ_SRC_EFUSE 0x1 - -#define NUM_CRYSTAL_FREQ 0x4 - /* EDMA3 Base Address */ #define EDMA3_BASE 0x49000000 diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h index 903398fe8f..4e78aafb0b 100644 --- a/arch/arm/include/asm/arch-am33xx/sys_proto.h +++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h @@ -46,3 +46,4 @@ int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency); void enable_usb_clocks(int index); void disable_usb_clocks(int index); void do_board_detect(void); +u32 get_sys_clk_index(void); diff --git a/arch/arm/mach-omap2/am33xx/board.c b/arch/arm/mach-omap2/am33xx/board.c index 956fcc8b95..f674ab029c 100644 --- a/arch/arm/mach-omap2/am33xx/board.c +++ b/arch/arm/mach-omap2/am33xx/board.c @@ -243,8 +243,6 @@ int board_early_init_f(void) */ __weak void am33xx_spl_board_init(void) { - do_setup_dpll(&dpll_core_regs, &dpll_core_opp100); - do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100); } #if defined(CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC) diff --git a/arch/arm/mach-omap2/am33xx/clock_am33xx.c b/arch/arm/mach-omap2/am33xx/clock_am33xx.c index 7b841b2d55..b246247916 100644 --- a/arch/arm/mach-omap2/am33xx/clock_am33xx.c +++ b/arch/arm/mach-omap2/am33xx/clock_am33xx.c @@ -10,6 +10,7 @@ #include <common.h> #include <asm/arch/cpu.h> +#include <asm/arch/sys_proto.h> #include <asm/arch/clock.h> #include <asm/arch/hardware.h> #include <asm/io.h> @@ -55,26 +56,96 @@ struct dpll_params dpll_mpu_opp100 = { CONFIG_SYS_MPUCLK, OSC-1, 1, -1, -1, -1, -1}; const struct dpll_params dpll_core_opp100 = { 1000, OSC-1, -1, -1, 10, 8, 4}; -const struct dpll_params dpll_mpu = { - MPUPLL_M_300, OSC-1, 1, -1, -1, -1, -1}; -const struct dpll_params dpll_core = { - 50, OSC-1, -1, -1, 1, 1, 1}; -const struct dpll_params dpll_per = { - 960, OSC-1, 5, -1, -1, -1, -1}; - -const struct dpll_params *get_dpll_mpu_params(void) + +const struct dpll_params dpll_mpu_opp[NUM_CRYSTAL_FREQ][NUM_OPPS] = { + { /* 19.2 MHz */ + {125, 3, 2, -1, -1, -1, -1}, /* OPP 50 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */ + {125, 3, 1, -1, -1, -1, -1}, /* OPP 100 */ + {150, 3, 1, -1, -1, -1, -1}, /* OPP 120 */ + {125, 2, 1, -1, -1, -1, -1}, /* OPP TB */ + {625, 11, 1, -1, -1, -1, -1} /* OPP NT */ + }, + { /* 24 MHz */ + {25, 0, 2, -1, -1, -1, -1}, /* OPP 50 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */ + {25, 0, 1, -1, -1, -1, -1}, /* OPP 100 */ + {30, 0, 1, -1, -1, -1, -1}, /* OPP 120 */ + {100, 3, 1, -1, -1, -1, -1}, /* OPP TB */ + {125, 2, 1, -1, -1, -1, -1} /* OPP NT */ + }, + { /* 25 MHz */ + {24, 0, 2, -1, -1, -1, -1}, /* OPP 50 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */ + {24, 0, 1, -1, -1, -1, -1}, /* OPP 100 */ + {144, 4, 1, -1, -1, -1, -1}, /* OPP 120 */ + {32, 0, 1, -1, -1, -1, -1}, /* OPP TB */ + {40, 0, 1, -1, -1, -1, -1} /* OPP NT */ + }, + { /* 26 MHz */ + {300, 12, 2, -1, -1, -1, -1}, /* OPP 50 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */ + {300, 12, 1, -1, -1, -1, -1}, /* OPP 100 */ + {360, 12, 1, -1, -1, -1, -1}, /* OPP 120 */ + {400, 12, 1, -1, -1, -1, -1}, /* OPP TB */ + {500, 12, 1, -1, -1, -1, -1} /* OPP NT */ + }, +}; + +const struct dpll_params dpll_core_1000MHz[NUM_CRYSTAL_FREQ] = { + {625, 11, -1, -1, 10, 8, 4}, /* 19.2 MHz */ + {125, 2, -1, -1, 10, 8, 4}, /* 24 MHz */ + {40, 0, -1, -1, 10, 8, 4}, /* 25 MHz */ + {500, 12, -1, -1, 10, 8, 4} /* 26 MHz */ +}; + +const struct dpll_params dpll_per_192MHz[NUM_CRYSTAL_FREQ] = { + {400, 7, 5, -1, -1, -1, -1}, /* 19.2 MHz */ + {400, 9, 5, -1, -1, -1, -1}, /* 24 MHz */ + {384, 9, 5, -1, -1, -1, -1}, /* 25 MHz */ + {480, 12, 5, -1, -1, -1, -1} /* 26 MHz */ +}; + +const struct dpll_params dpll_ddr3_303MHz[NUM_CRYSTAL_FREQ] = { + {505, 15, 2, -1, -1, -1, -1}, /*19.2*/ + {101, 3, 2, -1, -1, -1, -1}, /* 24 MHz */ + {303, 24, 1, -1, 4, -1, -1}, /* 25 MHz */ + {303, 12, 2, -1, 4, -1, -1} /* 26 MHz */ +}; + +const struct dpll_params dpll_ddr3_400MHz[NUM_CRYSTAL_FREQ] = { + {125, 5, 1, -1, -1, -1, -1}, /*19.2*/ + {50, 2, 1, -1, -1, -1, -1}, /* 24 MHz */ + {16, 0, 1, -1, 4, -1, -1}, /* 25 MHz */ + {200, 12, 1, -1, 4, -1, -1} /* 26 MHz */ +}; + +const struct dpll_params dpll_ddr2_266MHz[NUM_CRYSTAL_FREQ] = { + {665, 47, 1, -1, -1, -1, -1}, /*19.2*/ + {133, 11, 1, -1, -1, -1, -1}, /* 24 MHz */ + {266, 24, 1, -1, 4, -1, -1}, /* 25 MHz */ + {133, 12, 1, -1, 4, -1, -1} /* 26 MHz */ +}; + +__weak const struct dpll_params *get_dpll_mpu_params(void) { - return &dpll_mpu; + int ind = get_sys_clk_index(); + + return &dpll_mpu_opp[ind][2]; } const struct dpll_params *get_dpll_core_params(void) { - return &dpll_core; + int ind = get_sys_clk_index(); + + return &dpll_core_1000MHz[ind]; } const struct dpll_params *get_dpll_per_params(void) { - return &dpll_per; + int ind = get_sys_clk_index(); + + return &dpll_per_192MHz[ind]; } void setup_clocks_for_console(void) diff --git a/arch/arm/mach-omap2/am33xx/sys_info.c b/arch/arm/mach-omap2/am33xx/sys_info.c index c2df5b3ec5..a7f985ee17 100644 --- a/arch/arm/mach-omap2/am33xx/sys_info.c +++ b/arch/arm/mach-omap2/am33xx/sys_info.c @@ -68,6 +68,24 @@ u32 get_sysboot_value(void) return readl(&cstat->statusreg) & SYSBOOT_MASK; } +u32 get_sys_clk_index(void) +{ + struct ctrl_stat *ctrl = (struct ctrl_stat *)CTRL_BASE; + u32 ind = readl(&ctrl->statusreg); + +#ifdef CONFIG_AM43XX + u32 src; + src = (ind & CTRL_CRYSTAL_FREQ_SRC_MASK) >> CTRL_CRYSTAL_FREQ_SRC_SHIFT; + if (src == CTRL_CRYSTAL_FREQ_SRC_EFUSE) /* Value read from EFUSE */ + return ((ind & CTRL_CRYSTAL_FREQ_SELECTION_MASK) >> + CTRL_CRYSTAL_FREQ_SELECTION_SHIFT); + else /* Value read from SYS BOOT pins */ +#endif + return ((ind & CTRL_SYSBOOT_15_14_MASK) >> + CTRL_SYSBOOT_15_14_SHIFT); +} + + #ifdef CONFIG_DISPLAY_CPUINFO static char *cpu_revs[] = { "1.0", diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c index c6e20b0499..0f2e22c5eb 100644 --- a/board/ti/am335x/board.c +++ b/board/ti/am335x/board.c @@ -256,24 +256,62 @@ int spl_start_uboot(void) } #endif -#define OSC (V_OSCK/1000000) -const struct dpll_params dpll_ddr = { - 266, OSC-1, 1, -1, -1, -1, -1}; -const struct dpll_params dpll_ddr_evm_sk = { - 303, OSC-1, 1, -1, -1, -1, -1}; -const struct dpll_params dpll_ddr_bone_black = { - 400, OSC-1, 1, -1, -1, -1, -1}; - const struct dpll_params *get_dpll_ddr_params(void) { + int ind = get_sys_clk_index(); + if (board_is_evm_sk()) - return &dpll_ddr_evm_sk; + return &dpll_ddr3_303MHz[ind]; else if (board_is_bone_lt() || board_is_icev2()) - return &dpll_ddr_bone_black; + return &dpll_ddr3_400MHz[ind]; else if (board_is_evm_15_or_later()) - return &dpll_ddr_evm_sk; + return &dpll_ddr3_303MHz[ind]; else - return &dpll_ddr; + return &dpll_ddr2_266MHz[ind]; +} + +u8 bone_not_connected_to_ac_power(void) +{ + if (board_is_bone()) { + uchar pmic_status_reg; + if (tps65217_reg_read(TPS65217_STATUS, + &pmic_status_reg)) + return 1; + if (!(pmic_status_reg & TPS65217_PWR_SRC_AC_BITMASK)) { + puts("No AC power, switching to default OPP\n"); + return 1; + } + } + return 0; +} + +const struct dpll_params *get_dpll_mpu_params(void) +{ + int ind = get_sys_clk_index(); + int freq = am335x_get_efuse_mpu_max_freq(cdev); + + if (bone_not_connected_to_ac_power()) + freq = MPUPLL_M_600; + + if (board_is_bone_lt()) + freq = MPUPLL_M_1000; + + switch (freq) { + case MPUPLL_M_1000: + return &dpll_mpu_opp[ind][5]; + case MPUPLL_M_800: + return &dpll_mpu_opp[ind][4]; + case MPUPLL_M_720: + return &dpll_mpu_opp[ind][3]; + case MPUPLL_M_600: + return &dpll_mpu_opp[ind][2]; + case MPUPLL_M_500: + return &dpll_mpu_opp100; + case MPUPLL_M_300: + return &dpll_mpu_opp[ind][0]; + } + + return &dpll_mpu_opp[ind][0]; } static void scale_vcores_bone(int freq) @@ -294,16 +332,8 @@ static void scale_vcores_bone(int freq) * On Beaglebone White we need to ensure we have AC power * before increasing the frequency. */ - if (board_is_bone()) { - uchar pmic_status_reg; - if (tps65217_reg_read(TPS65217_STATUS, - &pmic_status_reg)) - return; - if (!(pmic_status_reg & TPS65217_PWR_SRC_AC_BITMASK)) { - puts("No AC power, switching to default OPP\n"); - freq = MPUPLL_M_600; - } - } + if (bone_not_connected_to_ac_power()) + freq = MPUPLL_M_600; /* * Override what we have detected since we know if we have diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c index 390cc168cd..299a72ad72 100644 --- a/board/ti/am43xx/board.c +++ b/board/ti/am43xx/board.c @@ -49,8 +49,6 @@ void do_board_detect(void) #ifndef CONFIG_SKIP_LOWLEVEL_INIT -#define NUM_OPPS 6 - const struct dpll_params dpll_mpu[NUM_CRYSTAL_FREQ][NUM_OPPS] = { { /* 19.2 MHz */ {125, 3, 2, -1, -1, -1, -1}, /* OPP 50 */ @@ -317,25 +315,6 @@ void emif_get_ext_phy_ctrl_const_regs(const u32 **regs, u32 *size) return; } -/* - * get_sys_clk_index : returns the index of the sys_clk read from - * ctrl status register. This value is either - * read from efuse or sysboot pins. - */ -static u32 get_sys_clk_index(void) -{ - struct ctrl_stat *ctrl = (struct ctrl_stat *)CTRL_BASE; - u32 ind = readl(&ctrl->statusreg), src; - - src = (ind & CTRL_CRYSTAL_FREQ_SRC_MASK) >> CTRL_CRYSTAL_FREQ_SRC_SHIFT; - if (src == CTRL_CRYSTAL_FREQ_SRC_EFUSE) /* Value read from EFUSE */ - return ((ind & CTRL_CRYSTAL_FREQ_SELECTION_MASK) >> - CTRL_CRYSTAL_FREQ_SELECTION_SHIFT); - else /* Value read from SYS BOOT pins */ - return ((ind & CTRL_SYSBOOT_15_14_MASK) >> - CTRL_SYSBOOT_15_14_SHIFT); -} - const struct dpll_params *get_dpll_ddr_params(void) { int ind = get_sys_clk_index();

[U-Boot,3/3] arm: am33xx: Add support for mulitiple PLL input frequencies

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