/*
* Miscelaneous DaVinci functions.
*
+ * Copyright (C) 2009 Nick Thompson, GE Fanuc Ltd, <nick.thompson@gefanuc.com>
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
* Copyright (C) 2008 Lyrtech <www.lyrtech.com>
* Copyright (C) 2004 Texas Instruments.
#include <i2c.h>
#include <net.h>
#include <asm/arch/hardware.h>
+#include <asm/io.h>
+#include "misc.h"
DECLARE_GLOBAL_DATA_PTR;
return(0);
}
-static int dv_get_pllm_output(uint32_t pllm)
-{
- return (pllm + 1) * (CONFIG_SYS_HZ_CLOCK / 1000000);
-}
-
-void dv_display_clk_infos(void)
-{
- printf("ARM Clock: %dMHz\n", dv_get_pllm_output(REG(PLL1_PLLM)) / 2);
- printf("DDR Clock: %dMHz\n", dv_get_pllm_output(REG(PLL2_PLLM)) /
- ((REG(PLL2_DIV2) & 0x1f) + 1) / 2);
-}
-
#ifdef CONFIG_DRIVER_TI_EMAC
/* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
}
#endif /* DAVINCI_EMAC */
+
+/*
+ * Change the setting of a pin multiplexer field.
+ *
+ * Takes an array of pinmux settings similar to:
+ *
+ * struct pinmux_config uart_pins[] = {
+ * { &davinci_syscfg_regs->pinmux[8], 2, 7 },
+ * { &davinci_syscfg_regs->pinmux[9], 2, 0 }
+ * };
+ *
+ * Stepping through the array, each pinmux[n] register has the given value
+ * set in the pin mux field specified.
+ *
+ * The number of pins in the array must be passed (ARRAY_SIZE can provide
+ * this value conveniently).
+ *
+ * Returns 0 if all field numbers and values are in the correct range,
+ * else returns -1.
+ */
+int davinci_configure_pin_mux(const struct pinmux_config *pins,
+ const int n_pins)
+{
+ int i;
+
+ /* check for invalid pinmux values */
+ for (i = 0; i < n_pins; i++) {
+ if (pins[i].field >= PIN_MUX_NUM_FIELDS ||
+ (pins[i].value & ~PIN_MUX_FIELD_MASK) != 0)
+ return -1;
+ }
+
+ /* configure the pinmuxes */
+ for (i = 0; i < n_pins; i++) {
+ const int offset = pins[i].field * PIN_MUX_FIELD_SIZE;
+ const unsigned int value = pins[i].value << offset;
+ const unsigned int mask = PIN_MUX_FIELD_MASK << offset;
+ const dv_reg *mux = pins[i].mux;
+
+ writel(value | (readl(mux) & (~mask)), mux);
+ }
+
+ return 0;
+}