1 files changed, 842 insertions, 0 deletions

diff --git a/roms/u-boot/arch/arm/mach-tegra/clock.c b/roms/u-boot/arch/arm/mach-tegra/clock.c
new file mode 100644
index 000000000..18c19dbf6
--- /dev/null
+++ b/roms/u-boot/arch/arm/mach-tegra/clock.c
@@ -0,0 +1,842 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2010-2019, NVIDIA CORPORATION.  All rights reserved.
+ */
+
+/* Tegra SoC common clock control functions */
+
+#include <common.h>
+#include <div64.h>
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <time.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/ap.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/pmc.h>
+#include <asm/arch-tegra/timer.h>
+#include <linux/delay.h>
+
+/*
+ * This is our record of the current clock rate of each clock. We don't
+ * fill all of these in since we are only really interested in clocks which
+ * we use as parents.
+ */
+static unsigned pll_rate[CLOCK_ID_COUNT];
+
+/*
+ * The oscillator frequency is fixed to one of four set values. Based on this
+ * the other clocks are set up appropriately.
+ */
+static unsigned osc_freq[CLOCK_OSC_FREQ_COUNT] = {
+	13000000,
+	19200000,
+	12000000,
+	26000000,
+	38400000,
+	48000000,
+};
+
+/* return 1 if a peripheral ID is in range */
+#define clock_type_id_isvalid(id) ((id) >= 0 && \
+		(id) < CLOCK_TYPE_COUNT)
+
+char pllp_valid = 1;	/* PLLP is set up correctly */
+
+/* return 1 if a periphc_internal_id is in range */
+#define periphc_internal_id_isvalid(id) ((id) >= 0 && \
+		(id) < PERIPHC_COUNT)
+
+/* number of clock outputs of a PLL */
+static const u8 pll_num_clkouts[] = {
+	1,	/* PLLC */
+	1,	/* PLLM */
+	4,	/* PLLP */
+	1,	/* PLLA */
+	0,	/* PLLU */
+	0,	/* PLLD */
+};
+
+int clock_get_osc_bypass(void)
+{
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	u32 reg;
+
+	reg = readl(&clkrst->crc_osc_ctrl);
+	return (reg & OSC_XOBP_MASK) >> OSC_XOBP_SHIFT;
+}
+
+/* Returns a pointer to the registers of the given pll */
+static struct clk_pll *get_pll(enum clock_id clkid)
+{
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+
+	assert(clock_id_is_pll(clkid));
+	if (clkid >= (enum clock_id)TEGRA_CLK_PLLS) {
+		debug("%s: Invalid PLL %d\n", __func__, clkid);
+		return NULL;
+	}
+	return &clkrst->crc_pll[clkid];
+}
+
+__weak struct clk_pll_simple *clock_get_simple_pll(enum clock_id clkid)
+{
+	return NULL;
+}
+
+int clock_ll_read_pll(enum clock_id clkid, u32 *divm, u32 *divn,
+		u32 *divp, u32 *cpcon, u32 *lfcon)
+{
+	struct clk_pll *pll = get_pll(clkid);
+	struct clk_pll_info *pllinfo = &tegra_pll_info_table[clkid];
+	u32 data;
+
+	assert(clkid != CLOCK_ID_USB);
+
+	/* Safety check, adds to code size but is small */
+	if (!clock_id_is_pll(clkid) || clkid == CLOCK_ID_USB)
+		return -1;
+	data = readl(&pll->pll_base);
+	*divm = (data >> pllinfo->m_shift) & pllinfo->m_mask;
+	*divn = (data >> pllinfo->n_shift) & pllinfo->n_mask;
+	*divp = (data >> pllinfo->p_shift) & pllinfo->p_mask;
+	data = readl(&pll->pll_misc);
+	/* NOTE: On T210, cpcon/lfcon no longer exist, moved to KCP/KVCO */
+	*cpcon = (data >> pllinfo->kcp_shift) & pllinfo->kcp_mask;
+	*lfcon = (data >> pllinfo->kvco_shift) & pllinfo->kvco_mask;
+
+	return 0;
+}
+
+unsigned long clock_start_pll(enum clock_id clkid, u32 divm, u32 divn,
+		u32 divp, u32 cpcon, u32 lfcon)
+{
+	struct clk_pll *pll = NULL;
+	struct clk_pll_info *pllinfo = &tegra_pll_info_table[clkid];
+	struct clk_pll_simple *simple_pll = NULL;
+	u32 misc_data, data;
+
+	if (clkid < (enum clock_id)TEGRA_CLK_PLLS) {
+		pll = get_pll(clkid);
+	} else {
+		simple_pll = clock_get_simple_pll(clkid);
+		if (!simple_pll) {
+			debug("%s: Uknown simple PLL %d\n", __func__, clkid);
+			return 0;
+		}
+	}
+
+	/*
+	 * pllinfo has the m/n/p and kcp/kvco mask and shift
+	 * values for all of the PLLs used in U-Boot, with any
+	 * SoC differences accounted for.
+	 *
+	 * Preserve EN_LOCKDET, etc.
+	 */
+	if (pll)
+		misc_data = readl(&pll->pll_misc);
+	else
+		misc_data = readl(&simple_pll->pll_misc);
+	misc_data &= ~(pllinfo->kcp_mask << pllinfo->kcp_shift);
+	misc_data |= cpcon << pllinfo->kcp_shift;
+	misc_data &= ~(pllinfo->kvco_mask << pllinfo->kvco_shift);
+	misc_data |= lfcon << pllinfo->kvco_shift;
+
+	data = (divm << pllinfo->m_shift) | (divn << pllinfo->n_shift);
+	data |= divp << pllinfo->p_shift;
+	data |= (1 << PLL_ENABLE_SHIFT);	/* BYPASS s/b 0 already */
+
+	if (pll) {
+		writel(misc_data, &pll->pll_misc);
+		writel(data, &pll->pll_base);
+	} else {
+		writel(misc_data, &simple_pll->pll_misc);
+		writel(data, &simple_pll->pll_base);
+	}
+
+	/* calculate the stable time */
+	return timer_get_us() + CLOCK_PLL_STABLE_DELAY_US;
+}
+
+void clock_ll_set_source_divisor(enum periph_id periph_id, unsigned source,
+			unsigned divisor)
+{
+	u32 *reg = get_periph_source_reg(periph_id);
+	u32 value;
+
+	value = readl(reg);
+
+	value &= ~OUT_CLK_SOURCE_31_30_MASK;
+	value |= source << OUT_CLK_SOURCE_31_30_SHIFT;
+
+	value &= ~OUT_CLK_DIVISOR_MASK;
+	value |= divisor << OUT_CLK_DIVISOR_SHIFT;
+
+	writel(value, reg);
+}
+
+int clock_ll_set_source_bits(enum periph_id periph_id, int mux_bits,
+			     unsigned source)
+{
+	u32 *reg = get_periph_source_reg(periph_id);
+
+	switch (mux_bits) {
+	case MASK_BITS_31_30:
+		clrsetbits_le32(reg, OUT_CLK_SOURCE_31_30_MASK,
+				source << OUT_CLK_SOURCE_31_30_SHIFT);
+		break;
+
+	case MASK_BITS_31_29:
+		clrsetbits_le32(reg, OUT_CLK_SOURCE_31_29_MASK,
+				source << OUT_CLK_SOURCE_31_29_SHIFT);
+		break;
+
+	case MASK_BITS_31_28:
+		clrsetbits_le32(reg, OUT_CLK_SOURCE_31_28_MASK,
+				source << OUT_CLK_SOURCE_31_28_SHIFT);
+		break;
+
+	default:
+		return -1;
+	}
+
+	return 0;
+}
+
+static int clock_ll_get_source_bits(enum periph_id periph_id, int mux_bits)
+{
+	u32 *reg = get_periph_source_reg(periph_id);
+	u32 val = readl(reg);
+
+	switch (mux_bits) {
+	case MASK_BITS_31_30:
+		val >>= OUT_CLK_SOURCE_31_30_SHIFT;
+		val &= OUT_CLK_SOURCE_31_30_MASK;
+		return val;
+	case MASK_BITS_31_29:
+		val >>= OUT_CLK_SOURCE_31_29_SHIFT;
+		val &= OUT_CLK_SOURCE_31_29_MASK;
+		return val;
+	case MASK_BITS_31_28:
+		val >>= OUT_CLK_SOURCE_31_28_SHIFT;
+		val &= OUT_CLK_SOURCE_31_28_MASK;
+		return val;
+	default:
+		return -1;
+	}
+}
+
+void clock_ll_set_source(enum periph_id periph_id, unsigned source)
+{
+	clock_ll_set_source_bits(periph_id, MASK_BITS_31_30, source);
+}
+
+/**
+ * Given the parent's rate and the required rate for the children, this works
+ * out the peripheral clock divider to use, in 7.1 binary format.
+ *
+ * @param divider_bits	number of divider bits (8 or 16)
+ * @param parent_rate	clock rate of parent clock in Hz
+ * @param rate		required clock rate for this clock
+ * @return divider which should be used
+ */
+static int clk_get_divider(unsigned divider_bits, unsigned long parent_rate,
+			   unsigned long rate)
+{
+	u64 divider = parent_rate * 2;
+	unsigned max_divider = 1 << divider_bits;
+
+	divider += rate - 1;
+	do_div(divider, rate);
+
+	if ((s64)divider - 2 < 0)
+		return 0;
+
+	if ((s64)divider - 2 >= max_divider)
+		return -1;
+
+	return divider - 2;
+}
+
+int clock_set_pllout(enum clock_id clkid, enum pll_out_id pllout, unsigned rate)
+{
+	struct clk_pll *pll = get_pll(clkid);
+	int data = 0, div = 0, offset = 0;
+
+	if (!clock_id_is_pll(clkid))
+		return -1;
+
+	if (pllout + 1 > pll_num_clkouts[clkid])
+		return -1;
+
+	div = clk_get_divider(8, pll_rate[clkid], rate);
+
+	if (div < 0)
+		return -1;
+
+	/* out2 and out4 are in the high part of the register */
+	if (pllout == PLL_OUT2 || pllout == PLL_OUT4)
+		offset = 16;
+
+	data = (div << PLL_OUT_RATIO_SHIFT) |
+			PLL_OUT_OVRRIDE | PLL_OUT_CLKEN | PLL_OUT_RSTN;
+	clrsetbits_le32(&pll->pll_out[pllout >> 1],
+			PLL_OUT_RATIO_MASK << offset, data << offset);
+
+	return 0;
+}
+
+/**
+ * Given the parent's rate and the divider in 7.1 format, this works out the
+ * resulting peripheral clock rate.
+ *
+ * @param parent_rate	clock rate of parent clock in Hz
+ * @param divider which should be used in 7.1 format
+ * @return effective clock rate of peripheral
+ */
+static unsigned long get_rate_from_divider(unsigned long parent_rate,
+					   int divider)
+{
+	u64 rate;
+
+	rate = (u64)parent_rate * 2;
+	do_div(rate, divider + 2);
+	return rate;
+}
+
+unsigned long clock_get_periph_rate(enum periph_id periph_id,
+		enum clock_id parent)
+{
+	u32 *reg = get_periph_source_reg(periph_id);
+	unsigned parent_rate = pll_rate[parent];
+	int div = (readl(reg) & OUT_CLK_DIVISOR_MASK) >> OUT_CLK_DIVISOR_SHIFT;
+
+	switch (periph_id) {
+	case PERIPH_ID_UART1:
+	case PERIPH_ID_UART2:
+	case PERIPH_ID_UART3:
+	case PERIPH_ID_UART4:
+	case PERIPH_ID_UART5:
+#ifdef CONFIG_TEGRA20
+		/* There's no divider for these clocks in this SoC. */
+		return parent_rate;
+#else
+		/*
+		 * This undoes the +2 in get_rate_from_divider() which I
+		 * believe is incorrect. Ideally we would fix
+		 * get_rate_from_divider(), but... Removing the +2 from
+		 * get_rate_from_divider() would probably require remove the -2
+		 * from the tail of clk_get_divider() since I believe that's
+		 * only there to invert get_rate_from_divider()'s +2. Observe
+		 * how find_best_divider() uses those two functions together.
+		 * However, doing so breaks other stuff, such as Seaboard's
+		 * display, likely due to clock_set_pllout()'s call to
+		 * clk_get_divider(). Attempting to fix that by making
+		 * clock_set_pllout() subtract 2 from clk_get_divider()'s
+		 * return value doesn't help. In summary this clock driver is
+		 * quite broken but I'm afraid I have no idea how to fix it
+		 * without completely replacing it.
+		 *
+		 * Be careful to avoid a divide by zero error.
+		 */
+		if (div >= 1)
+			div -= 2;
+		break;
+#endif
+	default:
+		break;
+	}
+
+	return get_rate_from_divider(parent_rate, div);
+}
+
+/**
+ * Find the best available 7.1 format divisor given a parent clock rate and
+ * required child clock rate. This function assumes that a second-stage
+ * divisor is available which can divide by powers of 2 from 1 to 256.
+ *
+ * @param divider_bits	number of divider bits (8 or 16)
+ * @param parent_rate	clock rate of parent clock in Hz
+ * @param rate		required clock rate for this clock
+ * @param extra_div	value for the second-stage divisor (not set if this
+ *			function returns -1.
+ * @return divider which should be used, or -1 if nothing is valid
+ *
+ */
+static int find_best_divider(unsigned divider_bits, unsigned long parent_rate,
+				unsigned long rate, int *extra_div)
+{
+	int shift;
+	int best_divider = -1;
+	int best_error = rate;
+
+	/* try dividers from 1 to 256 and find closest match */
+	for (shift = 0; shift <= 8 && best_error > 0; shift++) {
+		unsigned divided_parent = parent_rate >> shift;
+		int divider = clk_get_divider(divider_bits, divided_parent,
+						rate);
+		unsigned effective_rate = get_rate_from_divider(divided_parent,
+						divider);
+		int error = rate - effective_rate;
+
+		/* Given a valid divider, look for the lowest error */
+		if (divider != -1 && error < best_error) {
+			best_error = error;
+			*extra_div = 1 << shift;
+			best_divider = divider;
+		}
+	}
+
+	/* return what we found - *extra_div will already be set */
+	return best_divider;
+}
+
+/**
+ * Adjust peripheral PLL to use the given divider and source.
+ *
+ * @param periph_id	peripheral to adjust
+ * @param source	Source number (0-3 or 0-7)
+ * @param mux_bits	Number of mux bits (2 or 4)
+ * @param divider	Required divider in 7.1 or 15.1 format
+ * @return 0 if ok, -1 on error (requesting a parent clock which is not valid
+ *		for this peripheral)
+ */
+static int adjust_periph_pll(enum periph_id periph_id, int source,
+				int mux_bits, unsigned divider)
+{
+	u32 *reg = get_periph_source_reg(periph_id);
+
+	clrsetbits_le32(reg, OUT_CLK_DIVISOR_MASK,
+			divider << OUT_CLK_DIVISOR_SHIFT);
+	udelay(1);
+
+	/* work out the source clock and set it */
+	if (source < 0)
+		return -1;
+
+	clock_ll_set_source_bits(periph_id, mux_bits, source);
+
+	udelay(2);
+	return 0;
+}
+
+enum clock_id clock_get_periph_parent(enum periph_id periph_id)
+{
+	int err, mux_bits, divider_bits, type;
+	int source;
+
+	err = get_periph_clock_info(periph_id, &mux_bits, &divider_bits, &type);
+	if (err)
+		return CLOCK_ID_NONE;
+
+	source = clock_ll_get_source_bits(periph_id, mux_bits);
+
+	return get_periph_clock_id(periph_id, source);
+}
+
+unsigned clock_adjust_periph_pll_div(enum periph_id periph_id,
+		enum clock_id parent, unsigned rate, int *extra_div)
+{
+	unsigned effective_rate;
+	int mux_bits, divider_bits, source;
+	int divider;
+	int xdiv = 0;
+
+	/* work out the source clock and set it */
+	source = get_periph_clock_source(periph_id, parent, &mux_bits,
+					 &divider_bits);
+
+	divider = find_best_divider(divider_bits, pll_rate[parent],
+				    rate, &xdiv);
+	if (extra_div)
+		*extra_div = xdiv;
+
+	assert(divider >= 0);
+	if (adjust_periph_pll(periph_id, source, mux_bits, divider))
+		return -1U;
+	debug("periph %d, rate=%d, reg=%p = %x\n", periph_id, rate,
+		get_periph_source_reg(periph_id),
+		readl(get_periph_source_reg(periph_id)));
+
+	/* Check what we ended up with. This shouldn't matter though */
+	effective_rate = clock_get_periph_rate(periph_id, parent);
+	if (extra_div)
+		effective_rate /= *extra_div;
+	if (rate != effective_rate)
+		debug("Requested clock rate %u not honored (got %u)\n",
+			rate, effective_rate);
+	return effective_rate;
+}
+
+unsigned clock_start_periph_pll(enum periph_id periph_id,
+		enum clock_id parent, unsigned rate)
+{
+	unsigned effective_rate;
+
+	reset_set_enable(periph_id, 1);
+	clock_enable(periph_id);
+	udelay(2);
+
+	effective_rate = clock_adjust_periph_pll_div(periph_id, parent, rate,
+						 NULL);
+
+	reset_set_enable(periph_id, 0);
+	return effective_rate;
+}
+
+void clock_enable(enum periph_id clkid)
+{
+	clock_set_enable(clkid, 1);
+}
+
+void clock_disable(enum periph_id clkid)
+{
+	clock_set_enable(clkid, 0);
+}
+
+void reset_periph(enum periph_id periph_id, int us_delay)
+{
+	/* Put peripheral into reset */
+	reset_set_enable(periph_id, 1);
+	udelay(us_delay);
+
+	/* Remove reset */
+	reset_set_enable(periph_id, 0);
+
+	udelay(us_delay);
+}
+
+void reset_cmplx_set_enable(int cpu, int which, int reset)
+{
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	u32 mask;
+
+	/* Form the mask, which depends on the cpu chosen (2 or 4) */
+	assert(cpu >= 0 && cpu < MAX_NUM_CPU);
+	mask = which << cpu;
+
+	/* either enable or disable those reset for that CPU */
+	if (reset)
+		writel(mask, &clkrst->crc_cpu_cmplx_set);
+	else
+		writel(mask, &clkrst->crc_cpu_cmplx_clr);
+}
+
+unsigned int __weak clk_m_get_rate(unsigned int parent_rate)
+{
+	return parent_rate;
+}
+
+unsigned clock_get_rate(enum clock_id clkid)
+{
+	struct clk_pll *pll;
+	u32 base, divm;
+	u64 parent_rate, rate;
+	struct clk_pll_info *pllinfo = &tegra_pll_info_table[clkid];
+
+	parent_rate = osc_freq[clock_get_osc_freq()];
+	if (clkid == CLOCK_ID_OSC)
+		return parent_rate;
+
+	if (clkid == CLOCK_ID_CLK_M)
+		return clk_m_get_rate(parent_rate);
+
+	pll = get_pll(clkid);
+	if (!pll)
+		return 0;
+	base = readl(&pll->pll_base);
+
+	rate = parent_rate * ((base >> pllinfo->n_shift) & pllinfo->n_mask);
+	divm = (base >> pllinfo->m_shift) & pllinfo->m_mask;
+	/*
+	 * PLLU uses p_mask/p_shift for VCO on all but T210,
+	 * T210 uses normal DIVP. Handled in pllinfo table.
+	 */
+#ifdef CONFIG_TEGRA210
+	/*
+	 * PLLP's primary output (pllP_out0) on T210 is the VCO, and divp is
+	 * not applied. pllP_out2 does have divp applied. All other pllP_outN
+	 * are divided down from pllP_out0. We only support pllP_out0 in
+	 * U-Boot at the time of writing this comment.
+	 */
+	if (clkid != CLOCK_ID_PERIPH)
+#endif
+		divm <<= (base >> pllinfo->p_shift) & pllinfo->p_mask;
+	do_div(rate, divm);
+	return rate;
+}
+
+/**
+ * Set the output frequency you want for each PLL clock.
+ * PLL output frequencies are programmed by setting their N, M and P values.
+ * The governing equations are:
+ *     VCO = (Fi / m) * n, Fo = VCO / (2^p)
+ *     where Fo is the output frequency from the PLL.
+ * Example: Set the output frequency to 216Mhz(Fo) with 12Mhz OSC(Fi)
+ *     216Mhz = ((12Mhz / m) * n) / (2^p) so n=432,m=12,p=1
+ * Please see Tegra TRM section 5.3 to get the detail for PLL Programming
+ *
+ * @param n PLL feedback divider(DIVN)
+ * @param m PLL input divider(DIVN)
+ * @param p post divider(DIVP)
+ * @param cpcon base PLL charge pump(CPCON)
+ * @return 0 if ok, -1 on error (the requested PLL is incorrect and cannot
+ *		be overridden), 1 if PLL is already correct
+ */
+int clock_set_rate(enum clock_id clkid, u32 n, u32 m, u32 p, u32 cpcon)
+{
+	u32 base_reg, misc_reg;
+	struct clk_pll *pll;
+	struct clk_pll_info *pllinfo = &tegra_pll_info_table[clkid];
+
+	pll = get_pll(clkid);
+
+	base_reg = readl(&pll->pll_base);
+
+	/* Set BYPASS, m, n and p to PLL_BASE */
+	base_reg &= ~(pllinfo->m_mask << pllinfo->m_shift);
+	base_reg |= m << pllinfo->m_shift;
+
+	base_reg &= ~(pllinfo->n_mask << pllinfo->n_shift);
+	base_reg |= n << pllinfo->n_shift;
+
+	base_reg &= ~(pllinfo->p_mask << pllinfo->p_shift);
+	base_reg |= p << pllinfo->p_shift;
+
+	if (clkid == CLOCK_ID_PERIPH) {
+		/*
+		 * If the PLL is already set up, check that it is correct
+		 * and record this info for clock_verify() to check.
+		 */
+		if (base_reg & PLL_BASE_OVRRIDE_MASK) {
+			base_reg |= PLL_ENABLE_MASK;
+			if (base_reg != readl(&pll->pll_base))
+				pllp_valid = 0;
+			return pllp_valid ? 1 : -1;
+		}
+		base_reg |= PLL_BASE_OVRRIDE_MASK;
+	}
+
+	base_reg |= PLL_BYPASS_MASK;
+	writel(base_reg, &pll->pll_base);
+
+	/* Set cpcon (KCP) to PLL_MISC */
+	misc_reg = readl(&pll->pll_misc);
+	misc_reg &= ~(pllinfo->kcp_mask << pllinfo->kcp_shift);
+	misc_reg |= cpcon << pllinfo->kcp_shift;
+	writel(misc_reg, &pll->pll_misc);
+
+	/* Enable PLL */
+	base_reg |= PLL_ENABLE_MASK;
+	writel(base_reg, &pll->pll_base);
+
+	/* Disable BYPASS */
+	base_reg &= ~PLL_BYPASS_MASK;
+	writel(base_reg, &pll->pll_base);
+
+	return 0;
+}
+
+void clock_ll_start_uart(enum periph_id periph_id)
+{
+	/* Assert UART reset and enable clock */
+	reset_set_enable(periph_id, 1);
+	clock_enable(periph_id);
+	clock_ll_set_source(periph_id, 0); /* UARTx_CLK_SRC = 00, PLLP_OUT0 */
+
+	/* wait for 2us */
+	udelay(2);
+
+	/* De-assert reset to UART */
+	reset_set_enable(periph_id, 0);
+}
+
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+int clock_decode_periph_id(struct udevice *dev)
+{
+	enum periph_id id;
+	u32 cell[2];
+	int err;
+
+	err = dev_read_u32_array(dev, "clocks", cell, ARRAY_SIZE(cell));
+	if (err)
+		return -1;
+	id = clk_id_to_periph_id(cell[1]);
+	assert(clock_periph_id_isvalid(id));
+	return id;
+}
+#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
+
+int clock_verify(void)
+{
+	struct clk_pll *pll = get_pll(CLOCK_ID_PERIPH);
+	u32 reg = readl(&pll->pll_base);
+
+	if (!pllp_valid) {
+		printf("Warning: PLLP %x is not correct\n", reg);
+		return -1;
+	}
+	debug("PLLP %x is correct\n", reg);
+	return 0;
+}
+
+void clock_init(void)
+{
+	int i;
+
+	pll_rate[CLOCK_ID_CGENERAL] = clock_get_rate(CLOCK_ID_CGENERAL);
+	pll_rate[CLOCK_ID_MEMORY] = clock_get_rate(CLOCK_ID_MEMORY);
+	pll_rate[CLOCK_ID_PERIPH] = clock_get_rate(CLOCK_ID_PERIPH);
+	pll_rate[CLOCK_ID_USB] = clock_get_rate(CLOCK_ID_USB);
+	pll_rate[CLOCK_ID_DISPLAY] = clock_get_rate(CLOCK_ID_DISPLAY);
+	pll_rate[CLOCK_ID_XCPU] = clock_get_rate(CLOCK_ID_XCPU);
+	pll_rate[CLOCK_ID_SFROM32KHZ] = 32768;
+	pll_rate[CLOCK_ID_OSC] = clock_get_rate(CLOCK_ID_OSC);
+	pll_rate[CLOCK_ID_CLK_M] = clock_get_rate(CLOCK_ID_CLK_M);
+
+	debug("Osc = %d\n", pll_rate[CLOCK_ID_OSC]);
+	debug("CLKM = %d\n", pll_rate[CLOCK_ID_CLK_M]);
+	debug("PLLC = %d\n", pll_rate[CLOCK_ID_CGENERAL]);
+	debug("PLLM = %d\n", pll_rate[CLOCK_ID_MEMORY]);
+	debug("PLLP = %d\n", pll_rate[CLOCK_ID_PERIPH]);
+	debug("PLLU = %d\n", pll_rate[CLOCK_ID_USB]);
+	debug("PLLD = %d\n", pll_rate[CLOCK_ID_DISPLAY]);
+	debug("PLLX = %d\n", pll_rate[CLOCK_ID_XCPU]);
+
+	for (i = 0; periph_clk_init_table[i].periph_id != -1; i++) {
+		enum periph_id periph_id;
+		enum clock_id parent;
+		int source, mux_bits, divider_bits;
+
+		periph_id = periph_clk_init_table[i].periph_id;
+		parent = periph_clk_init_table[i].parent_clock_id;
+
+		source = get_periph_clock_source(periph_id, parent, &mux_bits,
+						 &divider_bits);
+		clock_ll_set_source_bits(periph_id, mux_bits, source);
+	}
+}
+
+static void set_avp_clock_source(u32 src)
+{
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	u32 val;
+
+	val = (src << SCLK_SWAKEUP_FIQ_SOURCE_SHIFT) |
+		(src << SCLK_SWAKEUP_IRQ_SOURCE_SHIFT) |
+		(src << SCLK_SWAKEUP_RUN_SOURCE_SHIFT) |
+		(src << SCLK_SWAKEUP_IDLE_SOURCE_SHIFT) |
+		(SCLK_SYS_STATE_RUN << SCLK_SYS_STATE_SHIFT);
+	writel(val, &clkrst->crc_sclk_brst_pol);
+	udelay(3);
+}
+
+/*
+ * This function is useful on Tegra30, and any later SoCs that have compatible
+ * PLLP configuration registers.
+ * NOTE: Not used on Tegra210 - see tegra210_setup_pllp in T210 clock.c
+ */
+void tegra30_set_up_pllp(void)
+{
+	struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	u32 reg;
+
+	/*
+	 * Based on the Tegra TRM, the system clock (which is the AVP clock) can
+	 * run up to 275MHz. On power on, the default sytem clock source is set
+	 * to PLLP_OUT0. This function sets PLLP's (hence PLLP_OUT0's) rate to
+	 * 408MHz which is beyond system clock's upper limit.
+	 *
+	 * The fix is to set the system clock to CLK_M before initializing PLLP,
+	 * and then switch back to PLLP_OUT4, which has an appropriate divider
+	 * configured, after PLLP has been configured
+	 */
+	set_avp_clock_source(SCLK_SOURCE_CLKM);
+
+	/*
+	 * PLLP output frequency set to 408Mhz
+	 * PLLC output frequency set to 228Mhz
+	 */
+	switch (clock_get_osc_freq()) {
+	case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
+		clock_set_rate(CLOCK_ID_PERIPH, 408, 12, 0, 8);
+		clock_set_rate(CLOCK_ID_CGENERAL, 456, 12, 1, 8);
+		break;
+
+	case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
+		clock_set_rate(CLOCK_ID_PERIPH, 408, 26, 0, 8);
+		clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
+		break;
+
+	case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
+		clock_set_rate(CLOCK_ID_PERIPH, 408, 13, 0, 8);
+		clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
+		break;
+	case CLOCK_OSC_FREQ_19_2:
+	default:
+		/*
+		 * These are not supported. It is too early to print a
+		 * message and the UART likely won't work anyway due to the
+		 * oscillator being wrong.
+		 */
+		break;
+	}
+
+	/* Set PLLP_OUT1, 2, 3 & 4 freqs to 9.6, 48, 102 & 204MHz */
+
+	/* OUT1, 2 */
+	/* Assert RSTN before enable */
+	reg = PLLP_OUT2_RSTN_EN | PLLP_OUT1_RSTN_EN;
+	writel(reg, &clkrst->crc_pll[CLOCK_ID_PERIPH].pll_out[0]);
+	/* Set divisor and reenable */
+	reg = (IN_408_OUT_48_DIVISOR << PLLP_OUT2_RATIO)
+		| PLLP_OUT2_OVR | PLLP_OUT2_CLKEN | PLLP_OUT2_RSTN_DIS
+		| (IN_408_OUT_9_6_DIVISOR << PLLP_OUT1_RATIO)
+		| PLLP_OUT1_OVR | PLLP_OUT1_CLKEN | PLLP_OUT1_RSTN_DIS;
+	writel(reg, &clkrst->crc_pll[CLOCK_ID_PERIPH].pll_out[0]);
+
+	/* OUT3, 4 */
+	/* Assert RSTN before enable */
+	reg = PLLP_OUT4_RSTN_EN | PLLP_OUT3_RSTN_EN;
+	writel(reg, &clkrst->crc_pll[CLOCK_ID_PERIPH].pll_out[1]);
+	/* Set divisor and reenable */
+	reg = (IN_408_OUT_204_DIVISOR << PLLP_OUT4_RATIO)
+		| PLLP_OUT4_OVR | PLLP_OUT4_CLKEN | PLLP_OUT4_RSTN_DIS
+		| (IN_408_OUT_102_DIVISOR << PLLP_OUT3_RATIO)
+		| PLLP_OUT3_OVR | PLLP_OUT3_CLKEN | PLLP_OUT3_RSTN_DIS;
+	writel(reg, &clkrst->crc_pll[CLOCK_ID_PERIPH].pll_out[1]);
+
+	set_avp_clock_source(SCLK_SOURCE_PLLP_OUT4);
+}
+
+int clock_external_output(int clk_id)
+{
+	u32 val;
+
+	if (clk_id >= 1 && clk_id <= 3) {
+		val = tegra_pmc_readl(offsetof(struct pmc_ctlr,
+				      pmc_clk_out_cntrl));
+		val |= 1 << (2 + (clk_id - 1) * 8);
+		tegra_pmc_writel(val,
+				 offsetof(struct pmc_ctlr,
+				 pmc_clk_out_cntrl));
+
+	} else {
+		printf("%s: Unknown output clock id %d\n", __func__, clk_id);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+__weak bool clock_early_init_done(void)
+{
+	return true;
+}