arm, da850: staticize funtions

[karo-tx-uboot.git] / arch / arm / cpu / arm926ejs / davinci / da850_lowlevel.c

diff --git a/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c b/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c
index a532f8ab6063270c16aed1504b14fc5c94319159..b91e948ce3e1450cdf6e8129e2aa1132abcea200 100644 (file)
--- a/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c
+++ b/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c
@@ -4,22 +4,7 @@
  * Copyright (C) 2011
  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 #include <common.h>
 #include <nand.h>
@@ -32,7 +17,16 @@
 #include <asm/arch/emif_defs.h>
 #include <asm/arch/pll_defs.h>
 
-void da850_waitloop(unsigned long loopcnt)
+void davinci_enable_uart0(void)
+{
+       lpsc_on(DAVINCI_LPSC_UART0);
+
+       /* Bringup UART0 out of reset */
+       REG(UART0_PWREMU_MGMT) = 0x00006001;
+}
+
+#if defined(CONFIG_SYS_DA850_PLL_INIT)
+static void da850_waitloop(unsigned long loopcnt)
 {
        unsigned long   i;
 
@@ -40,7 +34,7 @@ void da850_waitloop(unsigned long loopcnt)
                asm("   NOP");
 }
 
-int da850_pll_init(struct davinci_pllc_regs *reg, unsigned long pllmult)
+static int da850_pll_init(struct davinci_pllc_regs *reg, unsigned long pllmult)
 {
        if (reg == davinci_pllc0_regs)
                /* Unlock PLL registers. */
@@ -85,6 +79,13 @@ int da850_pll_init(struct davinci_pllc_regs *reg, unsigned long pllmult)
        /* Enable the PLL from Disable Mode PLLDIS bit to 0 */
        clrbits_le32(&reg->pllctl, PLLCTL_PLLDIS);
 
+#if defined(CONFIG_SYS_DA850_PLL0_PREDIV)
+       /* program the prediv */
+       if (reg == davinci_pllc0_regs && CONFIG_SYS_DA850_PLL0_PREDIV)
+               writel((PLL_DIVEN | CONFIG_SYS_DA850_PLL0_PREDIV),
+                       &reg->prediv);
+#endif
+
        /* Program the required multiplier value in PLLM */
        writel(pllmult, &reg->pllm);
 
@@ -156,8 +157,10 @@ int da850_pll_init(struct davinci_pllc_regs *reg, unsigned long pllmult)
 
        return 0;
 }
+#endif /* CONFIG_SYS_DA850_PLL_INIT */
 
-int da850_ddr_setup(void)
+#if defined(CONFIG_SYS_DA850_DDR_INIT)
+static int da850_ddr_setup(void)
 {
        unsigned long   tmp;
 
@@ -180,13 +183,21 @@ int da850_ddr_setup(void)
 
                setbits_le32(&davinci_syscfg1_regs->vtpio_ctl, VTP_LOCK);
                setbits_le32(&davinci_syscfg1_regs->vtpio_ctl, VTP_POWERDWN);
-
-               setbits_le32(&davinci_syscfg1_regs->vtpio_ctl, VTP_IOPWRDWN);
        }
-
+       setbits_le32(&davinci_syscfg1_regs->vtpio_ctl, VTP_IOPWRDWN);
        writel(CONFIG_SYS_DA850_DDR2_DDRPHYCR, &dv_ddr2_regs_ctrl->ddrphycr);
-       clrbits_le32(&davinci_syscfg1_regs->ddr_slew,
-               (1 << DDR_SLEW_CMOSEN_BIT));
+
+       if (CONFIG_SYS_DA850_DDR2_SDBCR & (1 << DV_DDR_SDCR_DDR2EN_SHIFT)) {
+               /* DDR2 */
+               clrbits_le32(&davinci_syscfg1_regs->ddr_slew,
+                       (1 << DDR_SLEW_DDR_PDENA_BIT) |
+                       (1 << DDR_SLEW_CMOSEN_BIT));
+       } else {
+               /* MOBILE DDR */
+               setbits_le32(&davinci_syscfg1_regs->ddr_slew,
+                       (1 << DDR_SLEW_DDR_PDENA_BIT) |
+                       (1 << DDR_SLEW_CMOSEN_BIT));
+       }
 
        /*
         * SDRAM Configuration Register (SDCR):
@@ -206,7 +217,11 @@ int da850_ddr_setup(void)
        writel(tmp, &dv_ddr2_regs_ctrl->sdbcr);
 
        /* write memory configuration and timing */
-       writel(CONFIG_SYS_DA850_DDR2_SDBCR2, &dv_ddr2_regs_ctrl->sdbcr2);
+       if (!(CONFIG_SYS_DA850_DDR2_SDBCR & (1 << DV_DDR_SDCR_DDR2EN_SHIFT))) {
+               /* MOBILE DDR only*/
+               writel(CONFIG_SYS_DA850_DDR2_SDBCR2,
+                       &dv_ddr2_regs_ctrl->sdbcr2);
+       }
        writel(CONFIG_SYS_DA850_DDR2_SDTIMR, &dv_ddr2_regs_ctrl->sdtimr);
        writel(CONFIG_SYS_DA850_DDR2_SDTIMR2, &dv_ddr2_regs_ctrl->sdtimr2);
 
@@ -230,11 +245,12 @@ int da850_ddr_setup(void)
 
        /* disable self refresh */
        clrbits_le32(&dv_ddr2_regs_ctrl->sdrcr,
-               DV_DDR_SDRCR_LPMODEN | DV_DDR_SDRCR_LPMODEN);
+               DV_DDR_SDRCR_LPMODEN | DV_DDR_SDRCR_MCLKSTOPEN);
        writel(CONFIG_SYS_DA850_DDR2_PBBPR, &dv_ddr2_regs_ctrl->pbbpr);
 
        return 0;
 }
+#endif /* CONFIG_SYS_DA850_DDR_INIT */
 
 __attribute__((weak))
 void board_gpio_init(void)
@@ -242,10 +258,6 @@ void board_gpio_init(void)
        return;
 }
 
-/* pinmux_resource[] vector is defined in the board specific file */
-extern const struct pinmux_resource pinmuxes[];
-extern const int pinmuxes_size;
-
 int arch_cpu_init(void)
 {
        /* Unlock kick registers */
@@ -259,13 +271,11 @@ int arch_cpu_init(void)
        if (davinci_configure_pin_mux_items(pinmuxes, pinmuxes_size))
                return 1;
 
+#if defined(CONFIG_SYS_DA850_PLL_INIT)
        /* PLL setup */
        da850_pll_init(davinci_pllc0_regs, CONFIG_SYS_DA850_PLL0_PLLM);
        da850_pll_init(davinci_pllc1_regs, CONFIG_SYS_DA850_PLL1_PLLM);
-
-       /* GPIO setup */
-       board_gpio_init();
-
+#endif
        /* setup CSn config */
 #if defined(CONFIG_SYS_DA850_CS2CFG)
        writel(CONFIG_SYS_DA850_CS2CFG, &davinci_emif_regs->ab1cr);
@@ -274,7 +284,12 @@ int arch_cpu_init(void)
        writel(CONFIG_SYS_DA850_CS3CFG, &davinci_emif_regs->ab2cr);
 #endif
 
-       lpsc_on(CONFIG_SYS_DA850_LPSC_UART);
+       da8xx_configure_lpsc_items(lpsc, lpsc_size);
+
+       /* GPIO setup */
+       board_gpio_init();
+
+
        NS16550_init((NS16550_t)(CONFIG_SYS_NS16550_COM1),
                        CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
 
@@ -284,8 +299,15 @@ int arch_cpu_init(void)
         */
        writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
                DAVINCI_UART_PWREMU_MGMT_UTRST),
+#if (CONFIG_SYS_NS16550_COM1 == DAVINCI_UART0_BASE)
+              &davinci_uart0_ctrl_regs->pwremu_mgmt);
+#else
               &davinci_uart2_ctrl_regs->pwremu_mgmt);
+#endif
 
+#if defined(CONFIG_SYS_DA850_DDR_INIT)
        da850_ddr_setup();
+#endif
+
        return 0;
 }