Tegra: PLL: use per-SoC pllinfo table instead of PLL_DIVM/N/P, etc.

[u-boot] / arch / arm / include / asm / arch-tegra / clock.h

diff --git a/arch/arm/include/asm/arch-tegra/clock.h b/arch/arm/include/asm/arch-tegra/clock.h
index c8677bdd76f833e3fdd512a62b0dca9561c9c59c..d570d7f134a8d32e9fb63be42ee920ea13d1cd88 100644 (file)
--- a/arch/arm/include/asm/arch-tegra/clock.h
+++ b/arch/arm/include/asm/arch-tegra/clock.h
@@ -1,22 +1,7 @@
 /*
  * Copyright (c) 2011 The Chromium OS Authors.
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 /* Tegra clock control functions */
@@ -31,10 +16,27 @@ enum clock_osc_freq {
        CLOCK_OSC_FREQ_19_2,
        CLOCK_OSC_FREQ_12_0,
        CLOCK_OSC_FREQ_26_0,
+       CLOCK_OSC_FREQ_38_4,
+       CLOCK_OSC_FREQ_48_0,
 
        CLOCK_OSC_FREQ_COUNT,
 };
 
+/*
+ * Note that no Tegra clock register actually uses all of bits 31:28 as
+ * the mux field. Rather, bits 30:28, 29:28, or 28 are used. However, in
+ * those cases, nothing is stored in the bits about the mux field, so it's
+ * safe to pretend that the mux field extends all the way to the end of the
+ * register. As such, the U-Boot clock driver is currently a bit lazy, and
+ * doesn't distinguish between 31:28, 30:28, 29:28 and 28; it just lumps
+ * them all together and pretends they're all 31:28.
+ */
+enum {
+       MASK_BITS_31_30,
+       MASK_BITS_31_29,
+       MASK_BITS_31_28,
+};
+
 #include <asm/arch/clock-tables.h>
 /* PLL stabilization delay in usec */
 #define CLOCK_PLL_STABLE_DELAY_US 300
@@ -128,9 +130,9 @@ void reset_set_enable(enum periph_id periph_id, int enable);
 enum crc_reset_id {
        /* Things we can hold in reset for each CPU */
        crc_rst_cpu = 1,
-       crc_rst_de = 1 << 2,    /* What is de? */
-       crc_rst_watchdog = 1 << 3,
-       crc_rst_debug = 1 << 4,
+       crc_rst_de = 1 << 4,    /* What is de? */
+       crc_rst_watchdog = 1 << 8,
+       crc_rst_debug = 1 << 12,
 };
 
 /**
@@ -155,6 +157,17 @@ void reset_cmplx_set_enable(int cpu, int which, int reset);
  */
 void clock_ll_set_source(enum periph_id periph_id, unsigned source);
 
+/**
+ * This function is similar to clock_ll_set_source() except that it can be
+ * used for clocks with more than 2 mux bits.
+ *
+ * @param periph_id    peripheral to adjust
+ * @param mux_bits     number of mux bits for the clock
+ * @param source       source clock (0-15 depending on mux_bits)
+ */
+int clock_ll_set_source_bits(enum periph_id periph_id, int mux_bits,
+                            unsigned source);
+
 /**
  * Set the source and divisor for a peripheral clock. This sets the
  * clock rate. You need to look up the datasheet to see the meaning of the
@@ -265,6 +278,9 @@ void clock_early_init(void);
 /* Returns a pointer to the clock source register for a peripheral */
 u32 *get_periph_source_reg(enum periph_id periph_id);
 
+/* Returns a pointer to the given 'simple' PLL */
+struct clk_pll_simple *clock_get_simple_pll(enum clock_id clkid);
+
 /**
  * Given a peripheral ID and the required source clock, this returns which
  * value should be programmed into the source mux for that peripheral.
@@ -317,4 +333,38 @@ int clock_set_rate(enum clock_id clkid, u32 n, u32 m, u32 p, u32 cpcon);
 #define periphc_internal_id_isvalid(id) ((id) >= 0 && \
                (id) < PERIPHC_COUNT)
 
+/* SoC-specific TSC init */
+void arch_timer_init(void);
+
+void tegra30_set_up_pllp(void);
+
+/* Number of PLL-based clocks (i.e. not OSC or 32KHz) */
+#define CLOCK_ID_PLL_COUNT     (CLOCK_ID_COUNT - 2)
+
+struct clk_pll_info {
+       u32     m_shift:5;      /* DIVM_SHIFT */
+       u32     n_shift:5;      /* DIVN_SHIFT */
+       u32     p_shift:5;      /* DIVP_SHIFT */
+       u32     kcp_shift:5;    /* KCP/cpcon SHIFT */
+       u32     kvco_shift:5;   /* KVCO/lfcon SHIFT */
+       u32     lock_ena:6;     /* LOCK_ENABLE/EN_LOCKDET shift */
+       u32     rsvd:1;
+       u32     m_mask:10;      /* DIVM_MASK */
+       u32     n_mask:12;      /* DIVN_MASK */
+       u32     p_mask:10;      /* DIVP_MASK or VCO_MASK */
+       u32     kcp_mask:10;    /* KCP/CPCON MASK */
+       u32     kvco_mask:10;   /* KVCO/LFCON MASK */
+       u32     lock_det:6;     /* LOCK_DETECT/LOCKED shift */
+       u32     rsvd2:6;
+};
+extern struct clk_pll_info tegra_pll_info_table[CLOCK_ID_PLL_COUNT];
+
+/**
+ * Enable output clock for external peripherals
+ *
+ * @param clk_id       Clock ID to output (1, 2 or 3)
+ * @return 0 if OK. -ve on error
+ */
+int clock_external_output(int clk_id);
+
 #endif  /* _TEGRA_CLOCK_H_ */