[U-Boot] [PATCH v3 1/2] ARM: am335x: Add support for chiliSOM
Marcin Niestroj
m.niestroj at grinn-global.com
Wed Jan 25 09:42:13 CET 2017
chiliSOM is a System On Module (http://http://grinn-global.com/chilisom/).
It can't exists on its own, but will be used as part of other boards.
Hardware specification:
* TI AM335x processor
* 128M, 256M or 512M DDR3 memory
* up to 256M NAND
We place source inside arch/arm/mach-omap2/ directory and make it
possible to reuse initialization code (i.e. DDR, NAND init) for all
boards that use it.
Signed-off-by: Marcin Niestroj <m.niestroj at grinn-global.com>
Reviewed-by: Tom Rini <trini at konsulko.com>
---
Changes v2 -> v3: none
Changes v1 -> v2 (suggested by Tom):
* chiliSOM was moved from arch/arm/mach-chilisom/chilisom.c to
arch/arm/mach-omap2/chilisom.c
* CONFIG_CHILISOM -> CONFIG_AM33XX_CHILISOM
arch/arm/include/asm/arch-am33xx/chilisom.h | 15 +++
arch/arm/mach-omap2/am33xx/Kconfig | 4 +
arch/arm/mach-omap2/am33xx/Makefile | 2 +
arch/arm/mach-omap2/am33xx/chilisom.c | 185 ++++++++++++++++++++++++++++
4 files changed, 206 insertions(+)
create mode 100644 arch/arm/include/asm/arch-am33xx/chilisom.h
create mode 100644 arch/arm/mach-omap2/am33xx/chilisom.c
diff --git a/arch/arm/include/asm/arch-am33xx/chilisom.h b/arch/arm/include/asm/arch-am33xx/chilisom.h
new file mode 100644
index 0000000000..bd0016e441
--- /dev/null
+++ b/arch/arm/include/asm/arch-am33xx/chilisom.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2017 Grinn
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __ARCH_ARM_MACH_CHILISOM_SOM_H__
+#define __ARCH_ARM_MACH_CHILISOM_SOM_H__
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+void chilisom_enable_pin_mux(void);
+void chilisom_spl_board_init(void);
+#endif
+
+#endif
diff --git a/arch/arm/mach-omap2/am33xx/Kconfig b/arch/arm/mach-omap2/am33xx/Kconfig
index 56c44062c4..b1a0f0f356 100644
--- a/arch/arm/mach-omap2/am33xx/Kconfig
+++ b/arch/arm/mach-omap2/am33xx/Kconfig
@@ -1,5 +1,9 @@
if AM33XX
+config AM33XX_CHILISOM
+ bool
+ select SUPPORT_SPL
+
choice
prompt "AM33xx board select"
optional
diff --git a/arch/arm/mach-omap2/am33xx/Makefile b/arch/arm/mach-omap2/am33xx/Makefile
index 6fda4825fc..05cc8a11c5 100644
--- a/arch/arm/mach-omap2/am33xx/Makefile
+++ b/arch/arm/mach-omap2/am33xx/Makefile
@@ -20,3 +20,5 @@ obj-y += board.o
obj-y += mux.o
obj-$(CONFIG_CLOCK_SYNTHESIZER) += clk_synthesizer.o
+
+obj-$(CONFIG_AM33XX_CHILISOM) += chilisom.o
diff --git a/arch/arm/mach-omap2/am33xx/chilisom.c b/arch/arm/mach-omap2/am33xx/chilisom.c
new file mode 100644
index 0000000000..a594f6cf37
--- /dev/null
+++ b/arch/arm/mach-omap2/am33xx/chilisom.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
+ * Copyright (C) 2017, Grinn - http://grinn-global.com/
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/clk_synthesizer.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/ddr_defs.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/omap.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/emif.h>
+#include <asm/io.h>
+#include <errno.h>
+#include <i2c.h>
+#include <power/tps65217.h>
+#include <spl.h>
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+
+static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+
+static struct module_pin_mux i2c0_pin_mux[] = {
+ {OFFSET(i2c0_sda), (MODE(0) | RXACTIVE |
+ PULLUDEN | SLEWCTRL)}, /* I2C_DATA */
+ {OFFSET(i2c0_scl), (MODE(0) | RXACTIVE |
+ PULLUDEN | SLEWCTRL)}, /* I2C_SCLK */
+ {-1},
+};
+
+static struct module_pin_mux nand_pin_mux[] = {
+ {OFFSET(gpmc_ad0), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD0 */
+ {OFFSET(gpmc_ad1), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD1 */
+ {OFFSET(gpmc_ad2), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD2 */
+ {OFFSET(gpmc_ad3), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD3 */
+ {OFFSET(gpmc_ad4), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD4 */
+ {OFFSET(gpmc_ad5), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD5 */
+ {OFFSET(gpmc_ad6), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD6 */
+ {OFFSET(gpmc_ad7), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD7 */
+ {OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* NAND WAIT */
+ {OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN | RXACTIVE)}, /* NAND_WPN */
+ {OFFSET(gpmc_csn0), (MODE(0) | PULLUDEN)}, /* NAND_CS0 */
+ {OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDEN)}, /* NAND_ADV_ALE */
+ {OFFSET(gpmc_oen_ren), (MODE(0) | PULLUDEN)}, /* NAND_OE */
+ {OFFSET(gpmc_wen), (MODE(0) | PULLUDEN)}, /* NAND_WEN */
+ {OFFSET(gpmc_be0n_cle), (MODE(0) | PULLUDEN)}, /* NAND_BE_CLE */
+ {-1},
+};
+
+static void enable_i2c0_pin_mux(void)
+{
+ configure_module_pin_mux(i2c0_pin_mux);
+}
+
+void chilisom_enable_pin_mux(void)
+{
+ /* chilisom pin mux */
+ configure_module_pin_mux(nand_pin_mux);
+}
+
+static const struct ddr_data ddr3_chilisom_data = {
+ .datardsratio0 = MT41K256M16HA125E_RD_DQS,
+ .datawdsratio0 = MT41K256M16HA125E_WR_DQS,
+ .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
+ .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
+};
+
+static const struct cmd_control ddr3_chilisom_cmd_ctrl_data = {
+ .cmd0csratio = MT41K256M16HA125E_RATIO,
+ .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
+
+ .cmd1csratio = MT41K256M16HA125E_RATIO,
+ .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
+
+ .cmd2csratio = MT41K256M16HA125E_RATIO,
+ .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
+};
+
+static struct emif_regs ddr3_chilisom_emif_reg_data = {
+ .sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
+ .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
+ .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
+ .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
+ .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
+ .ocp_config = 0x00141414,
+ .zq_config = MT41K256M16HA125E_ZQ_CFG,
+ .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
+};
+
+void chilisom_spl_board_init(void)
+{
+ int mpu_vdd;
+ int usb_cur_lim;
+
+ enable_i2c0_pin_mux();
+
+ /* Get the frequency */
+ dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
+
+
+ if (i2c_probe(TPS65217_CHIP_PM))
+ return;
+
+ /*
+ * Increase USB current limit to 1300mA or 1800mA and set
+ * the MPU voltage controller as needed.
+ */
+ if (dpll_mpu_opp100.m == MPUPLL_M_1000) {
+ usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
+ mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
+ } else {
+ usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
+ mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
+ }
+
+ if (tps65217_reg_write(TPS65217_PROT_LEVEL_NONE,
+ TPS65217_POWER_PATH,
+ usb_cur_lim,
+ TPS65217_USB_INPUT_CUR_LIMIT_MASK))
+ puts("tps65217_reg_write failure\n");
+
+ /* Set DCDC3 (CORE) voltage to 1.125V */
+ if (tps65217_voltage_update(TPS65217_DEFDCDC3,
+ TPS65217_DCDC_VOLT_SEL_1125MV)) {
+ puts("tps65217_voltage_update failure\n");
+ return;
+ }
+ /* Set CORE Frequencies to OPP100 */
+ do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
+
+ /* Set DCDC2 (MPU) voltage */
+ if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) {
+ puts("tps65217_voltage_update failure\n");
+ return;
+ }
+
+ /* Set LDO3 to 1.8V and LDO4 to 3.3V */
+ if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
+ TPS65217_DEFLS1,
+ TPS65217_LDO_VOLTAGE_OUT_1_8,
+ TPS65217_LDO_MASK))
+ puts("tps65217_reg_write failure\n");
+
+ if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
+ TPS65217_DEFLS2,
+ TPS65217_LDO_VOLTAGE_OUT_3_3,
+ TPS65217_LDO_MASK))
+ puts("tps65217_reg_write failure\n");
+
+ /* Set MPU Frequency to what we detected now that voltages are set */
+ do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
+}
+
+#define OSC (V_OSCK/1000000)
+const struct dpll_params dpll_ddr_chilisom = {
+ 400, OSC-1, 1, -1, -1, -1, -1};
+
+const struct dpll_params *get_dpll_ddr_params(void)
+{
+ return &dpll_ddr_chilisom;
+}
+
+const struct ctrl_ioregs ioregs_chilisom = {
+ .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
+ .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
+ .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
+ .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
+ .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
+};
+
+void sdram_init(void)
+{
+ config_ddr(400, &ioregs_chilisom,
+ &ddr3_chilisom_data,
+ &ddr3_chilisom_cmd_ctrl_data,
+ &ddr3_chilisom_emif_reg_data, 0);
+}
+
+#endif /* CONFIG_SKIP_LOWLEVEL_INIT */
--
2.11.0
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