Add code for configuring IDT8T49N222A device for various output refclks - The IDT8T49N222A is a low phase noise Frequency Translator / Synthesizer with alarm and monitoring functions suitable for networking and communications applications. It is able to generate wide range of output frequencies. - In B4860QDS, it has been used to generate different refclks to SerDes modules - Programming of these devices are performed by I2C interface.

Signed-off-by: Shaveta Leekha shaveta@freescale.com --- board/freescale/common/Makefile | 1 + board/freescale/common/idt8t49n222a_serdes_clk.c | 220 ++++++++++++++++++++++ board/freescale/common/idt8t49n222a_serdes_clk.h | 120 ++++++++++++ 3 files changed, 341 insertions(+), 0 deletions(-) create mode 100644 board/freescale/common/idt8t49n222a_serdes_clk.c create mode 100644 board/freescale/common/idt8t49n222a_serdes_clk.h

diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile index 37236d0..a550e5a 100644 --- a/board/freescale/common/Makefile +++ b/board/freescale/common/Makefile @@ -70,6 +70,7 @@ COBJS-$(CONFIG_P4080DS) += ics307_clk.o COBJS-$(CONFIG_P5020DS) += ics307_clk.o COBJS-$(CONFIG_P5040DS) += ics307_clk.o COBJS-$(CONFIG_VSC_CROSSBAR) += vsc3316_3308.o +COBJS-$(CONFIG_IDT8T49N222A) += idt8t49n222a_serdes_clk.o

# deal with common files for P-series corenet based devices SUBLIB-$(CONFIG_P2041RDB) += p_corenet/libp_corenet.o diff --git a/board/freescale/common/idt8t49n222a_serdes_clk.c b/board/freescale/common/idt8t49n222a_serdes_clk.c new file mode 100644 index 0000000..8798c87 --- /dev/null +++ b/board/freescale/common/idt8t49n222a_serdes_clk.c @@ -0,0 +1,220 @@ +/* + * Copyright 2013 Freescale Semiconductor, Inc. + * Author: Shaveta Leekha shaveta@freescale.com + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include "idt8t49n222a_serdes_clk.h" + +#define DEVICE_ID_REG 0x00 + +static int check_pll_status(u8 idt_addr) +{ + u8 val = 0; + int ret; + + ret = i2c_read(idt_addr, 0x17, 1, &val, 1); + if (ret < 0) { + printf("IDT:0x%x could not read status register from device.\n", + idt_addr); + return ret; + } + + if (val & 0x04) { + debug("idt8t49n222a PLL is LOCKED: %x\n", val); + } else { + printf("idt8t49n222a PLL is not LOCKED: %x\n", val); + return -1; + } + + return 0; +} + +int set_serdes_refclk(u8 idt_addr, u8 serdes_num, + enum serdes_refclk refclk1, + enum serdes_refclk refclk2, u8 feedback) +{ + u8 dev_id = 0; + int i, ret; + + debug("IDT:Configuring idt8t49n222a device at I2C address: 0x%2x\n", + idt_addr); + + ret = i2c_read(idt_addr, DEVICE_ID_REG, 1, &dev_id, 1); + if (ret < 0) { + debug("IDT:0x%x could not read DEV_ID from device.\n", + idt_addr); + return ret; + } + + if ((dev_id != 0x00) && (dev_id != 0x24) && (dev_id != 0x2a)) { + debug("IDT: device at address 0x%x is not idt8t49n222a.\n", + idt_addr); + } + + if (serdes_num != 1 && serdes_num != 2) { + debug("serdes_num should be 1 for SerDes1 and" + " 2 for SerDes2.\n"); + return -1; + } + + if ((refclk1 == SERDES_REFCLK_122_88 && refclk2 != SERDES_REFCLK_122_88) + || (refclk1 != SERDES_REFCLK_122_88 + && refclk2 == SERDES_REFCLK_122_88)) { + debug("Only one refclk at 122.88MHz is not supported." + " Please set both refclk1 & refclk2 to 122.88MHz" + " or both not to 122.88MHz.\n"); + return -1; + } + + if (refclk1 != SERDES_REFCLK_100 && refclk1 != SERDES_REFCLK_122_88 + && refclk1 != SERDES_REFCLK_125 + && refclk1 != SERDES_REFCLK_156_25) { + debug("refclk1 should be 100MHZ, 122.88MHz, 125MHz" + " or 156.25MHz.\n"); + return -1; + } + + if (refclk2 != SERDES_REFCLK_100 && refclk2 != SERDES_REFCLK_122_88 + && refclk2 != SERDES_REFCLK_125 + && refclk2 != SERDES_REFCLK_156_25) { + debug("refclk2 should be 100MHZ, 122.88MHz, 125MHz" + " or 156.25MHz.\n"); + return -1; + } + + if (feedback != 0 && feedback != 1) { + debug("valid values for feedback are 0(default) or 1.\n"); + return -1; + } + + /* Configuring IDT for output refclks as + * Refclk1 = 122.88MHz Refclk2 = 122.88MHz + */ + if (refclk1 == SERDES_REFCLK_122_88 && + refclk2 == SERDES_REFCLK_122_88) { + printf("Setting refclk1:122.88 and refclk2:122.88\n"); + for (i = 0; i < NUM_IDT_REGS; i++) + i2c_reg_write(idt_addr, idt_conf_122_88[i][0], + idt_conf_122_88[i][1]); + + if (feedback) { + for (i = 0; i < NUM_IDT_REGS_FEEDBACK; i++) + i2c_reg_write(idt_addr, + idt_conf_122_88_feedback[i][0], + idt_conf_122_88_feedback[i][1]); + } + } + + if (refclk1 != SERDES_REFCLK_122_88 && + refclk2 != SERDES_REFCLK_122_88) { + for (i = 0; i < NUM_IDT_REGS; i++) + i2c_reg_write(idt_addr, idt_conf_not_122_88[i][0], + idt_conf_not_122_88[i][1]); + } + + /* Configuring IDT for output refclks as + * Refclk1 = 100MHz Refclk2 = 125MHz + */ + if (refclk1 == SERDES_REFCLK_100 && refclk2 == SERDES_REFCLK_125) { + printf("Setting refclk1:100 and refclk2:125\n"); + i2c_reg_write(idt_addr, 0x11, 0x10); + } + + /* Configuring IDT for output refclks as + * Refclk1 = 125MHz Refclk2 = 125MHz + */ + if (refclk1 == SERDES_REFCLK_125 && refclk2 == SERDES_REFCLK_125) { + printf("Setting refclk1:125 and refclk2:125\n"); + i2c_reg_write(idt_addr, 0x10, 0x10); + i2c_reg_write(idt_addr, 0x11, 0x10); + } + + /* Configuring IDT for output refclks as + * Refclk1 = 125MHz Refclk2 = 100MHz + */ + if (refclk1 == SERDES_REFCLK_125 && refclk2 == SERDES_REFCLK_100) { + printf("Setting refclk1:125 and refclk2:100\n"); + i2c_reg_write(idt_addr, 0x10, 0x10); + } + + /* Configuring IDT for output refclks as + * Refclk1 = 156.25MHz Refclk2 = 156.25MHz + */ + if (refclk1 == SERDES_REFCLK_156_25 && + refclk2 == SERDES_REFCLK_156_25) { + printf("Setting refclk1:156.25 and refclk2:156.25\n"); + for (i = 0; i < NUM_IDT_REGS_156_25; i++) + i2c_reg_write(idt_addr, idt_conf_156_25[i][0], + idt_conf_156_25[i][1]); + } + + /* Configuring IDT for output refclks as + * Refclk1 = 100MHz Refclk2 = 156.25MHz + */ + if (refclk1 == SERDES_REFCLK_100 && + refclk2 == SERDES_REFCLK_156_25) { + printf("Setting refclk1:100 and refclk2:156.25\n"); + for (i = 0; i < NUM_IDT_REGS_156_25; i++) + i2c_reg_write(idt_addr, idt_conf_100_156_25[i][0], + idt_conf_100_156_25[i][1]); + } + + /* Configuring IDT for output refclks as + * Refclk1 = 125MHz Refclk2 = 156.25MHz + */ + if (refclk1 == SERDES_REFCLK_125 && + refclk2 == SERDES_REFCLK_156_25) { + printf("Setting refclk1:125 and refclk2:156.25\n"); + for (i = 0; i < NUM_IDT_REGS_156_25; i++) + i2c_reg_write(idt_addr, idt_conf_125_156_25[i][0], + idt_conf_125_156_25[i][1]); + } + + /* Configuring IDT for output refclks as + * Refclk1 = 156.25MHz Refclk2 = 100MHz + */ + if (refclk1 == SERDES_REFCLK_156_25 && + refclk2 == SERDES_REFCLK_100) { + printf("Setting refclk1:156.25 and refclk2:100\n"); + for (i = 0; i < NUM_IDT_REGS_156_25; i++) + i2c_reg_write(idt_addr, idt_conf_156_25_100[i][0], + idt_conf_156_25_100[i][1]); + } + + /* Configuring IDT for output refclks as + * Refclk1 = 156.25MHz Refclk2 = 125MHz + */ + if (refclk1 == SERDES_REFCLK_156_25 && + refclk2 == SERDES_REFCLK_125) { + printf("Setting refclk1:156.25 and refclk2:125\n"); + for (i = 0; i < NUM_IDT_REGS_156_25; i++) + i2c_reg_write(idt_addr, idt_conf_156_25_125[i][0], + idt_conf_156_25_125[i][1]); + } + + /* waiting for maximum of 1 second if PLL doesn'r get locked + * initially. then check the status again. + */ + if (check_pll_status(idt_addr)) { + mdelay(1000); + if (check_pll_status(idt_addr)) + return -1; + } + + return 0; +} diff --git a/board/freescale/common/idt8t49n222a_serdes_clk.h b/board/freescale/common/idt8t49n222a_serdes_clk.h new file mode 100644 index 0000000..d7d64e7 --- /dev/null +++ b/board/freescale/common/idt8t49n222a_serdes_clk.h @@ -0,0 +1,120 @@ +/* + * Copyright 2013 Freescale Semiconductor, Inc. + * Author: Shaveta Leekha shaveta@freescale.com + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __IDT8T49N222A_SERDES_CLK_H_ +#define __IDT8T49N222A_SERDES_CLK_H_ 1 + +#include <common.h> +#include <i2c.h> +#include "qixis.h" +#include "../b4860qds/b4860qds_qixis.h" +#include <errno.h> + +#define NUM_IDT_REGS 23 +#define NUM_IDT_REGS_FEEDBACK 12 +#define NUM_IDT_REGS_156_25 11 + +/* CLK */ +enum serdes_refclk { + SERDES_REFCLK_100, /* refclk 100Mhz */ + SERDES_REFCLK_122_88, /* refclk 122.88Mhz */ + SERDES_REFCLK_125, /* refclk 125Mhz */ + SERDES_REFCLK_156_25, /* refclk 156.25Mhz */ + SERDES_REFCLK_NONE = -1, +}; + +/* configuration values for IDT registers for Output Refclks: + * Refclk1 = 122.88MHz Refclk2 = 122.88MHz + */ +static const u8 idt_conf_122_88[23][2] = { {0x00, 0x3C}, {0x01, 0x00}, + {0x02, 0x9F}, {0x03, 0x00}, {0x04, 0x0B}, {0x05, 0x00}, + {0x06, 0x00}, {0x07, 0x00}, {0x08, 0x7D}, {0x09, 0x00}, + {0x0A, 0x08}, {0x0B, 0x00}, {0x0C, 0xDC}, {0x0D, 0x00}, + {0x0E, 0x00}, {0x0F, 0x00}, {0x10, 0x12}, {0x11, 0x12}, + {0x12, 0xB9}, {0x13, 0xBC}, {0x14, 0x40}, {0x15, 0x08}, + {0x16, 0xA0} }; + + +/* configuration values for IDT registers for Output Refclks: + * Refclk1 not equal to 122.88MHz Refclk2 not equal to 122.88MHz + */ +static const u8 idt_conf_not_122_88[23][2] = { {0x00, 0x00}, {0x01, 0x00}, + {0x02, 0x00}, {0x03, 0x00}, {0x04, 0x0A}, {0x05, 0x00}, + {0x06, 0x00}, {0x07, 0x00}, {0x08, 0x7D}, {0x09, 0x00}, + {0x0A, 0x08}, {0x0B, 0x00}, {0x0C, 0xDC}, {0x0D, 0x00}, + {0x0E, 0x00}, {0x0F, 0x00}, {0x10, 0x14}, {0x11, 0x14}, + {0x12, 0x35}, {0x13, 0xBC}, {0x14, 0x40}, {0x15, 0x08}, + {0x16, 0xA0} }; + +/* Reconfiguration values for some of IDT registers for + * Output Refclks: + * Refclk1 = 122.88MHz Refclk2 = 122.88MHz + * and with feedback as 1 + */ +static const u8 idt_conf_122_88_feedback[12][2] = { {0x00, 0x50}, {0x02, 0xD7}, + {0x04, 0x89}, {0x06, 0xC3}, {0x08, 0xC0}, {0x0A, 0x07}, + {0x0C, 0x80}, {0x10, 0x10}, {0x11, 0x10}, {0x12, 0x1B}, + {0x14, 0x00}, {0x15, 0xE8} }; + +/* configuration values for IDT registers for Output Refclks: + * Refclk1 : 156.25MHz Refclk2 : 156.25MHz + */ +static const u8 idt_conf_156_25[11][2] = { {0x04, 0x19}, {0x06, 0x03}, + {0x08, 0xC0}, {0x0A, 0x07}, {0x0C, 0xA1}, {0x0E, 0x20}, + {0x10, 0x10}, {0x11, 0x10}, {0x12, 0xB5}, {0x13, 0x3C}, + {0x15, 0xE8} }; + +/* configuration values for IDT registers for Output Refclks: + * Refclk1 : 100MHz Refclk2 : 156.25MHz + */ +static const u8 idt_conf_100_156_25[11][2] = { {0x04, 0x19}, {0x06, 0x03}, + {0x08, 0xC0}, {0x0A, 0x07}, {0x0C, 0xA1}, {0x0E, 0x20}, + {0x10, 0x19}, {0x11, 0x10}, {0x12, 0xB5}, {0x13, 0x3C}, + {0x15, 0xE8} }; + +/* configuration values for IDT registers for Output Refclks: + * Refclk1 : 125MHz Refclk2 : 156.25MHz + */ +static const u8 idt_conf_125_156_25[11][2] = { {0x04, 0x19}, {0x06, 0x03}, + {0x08, 0xC0}, {0x0A, 0x07}, {0x0C, 0xA1}, {0x0E, 0x20}, + {0x10, 0x14}, {0x11, 0x10}, {0x12, 0xB5}, {0x13, 0x3C}, + {0x15, 0xE8} }; + +/* configuration values for IDT registers for Output Refclks: + * Refclk1 : 156.25MHz Refclk2 : 100MHz + */ +static const u8 idt_conf_156_25_100[11][2] = { {0x04, 0x19}, {0x06, 0x03}, + {0x08, 0xC0}, {0x0A, 0x07}, {0x0C, 0xA1}, {0x0E, 0x20}, + {0x10, 0x10}, {0x11, 0x19}, {0x12, 0xB5}, {0x13, 0x3C}, + {0x15, 0xE8} }; + +/* configuration values for IDT registers for Output Refclks: + * Refclk1 : 156.25MHz Refclk2 : 125MHz + */ +static const u8 idt_conf_156_25_125[11][2] = { {0x04, 0x19}, {0x06, 0x03}, + {0x08, 0xC0}, {0x0A, 0x07}, {0x0C, 0xA1}, {0x0E, 0x20}, + {0x10, 0x10}, {0x11, 0x14}, {0x12, 0xB5}, {0x13, 0x3C}, + {0x15, 0xE8} }; + +int set_serdes_refclk(u8 idt_addr, u8 serdes_num, + enum serdes_refclk refclk1, + enum serdes_refclk refclk2, u8 feedback); + +#endif /*__IDT8T49N222A_SERDES_CLK_H_ */