/*
- * Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2010-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
},
};
-void adjust_pllp_out_freqs(void)
-{
- struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
- struct clk_pll *pll = &clkrst->crc_pll[CLOCK_ID_PERIPH];
- u32 reg;
-
- /* Set T30 PLLP_OUT1, 2, 3 & 4 freqs to 9.6, 48, 102 & 204MHz */
- reg = readl(&pll->pll_out[0]); /* OUTA, contains OUT2 / OUT1 */
- reg |= (IN_408_OUT_48_DIVISOR << PLLP_OUT2_RATIO) | PLLP_OUT2_OVR
- | (IN_408_OUT_9_6_DIVISOR << PLLP_OUT1_RATIO) | PLLP_OUT1_OVR;
- writel(reg, &pll->pll_out[0]);
-
- reg = readl(&pll->pll_out[1]); /* OUTB, contains OUT4 / OUT3 */
- reg |= (IN_408_OUT_204_DIVISOR << PLLP_OUT4_RATIO) | PLLP_OUT4_OVR
- | (IN_408_OUT_102_DIVISOR << PLLP_OUT3_RATIO) | PLLP_OUT3_OVR;
- writel(reg, &pll->pll_out[1]);
-}
-
int pllx_set_rate(struct clk_pll_simple *pll , u32 divn, u32 divm,
u32 divp, u32 cpcon)
{
/* set pllx */
sel = &tegra_pll_x_table[chip_sku][osc];
pllx_set_rate(pll, sel->n, sel->m, sel->p, sel->cpcon);
-
- /* adjust PLLP_out1-4 on T3x/T114 */
- if (soc_type >= CHIPID_TEGRA30) {
- debug(" init_pllx: adjusting PLLP out freqs\n");
- adjust_pllp_out_freqs();
- }
}
void enable_cpu_clock(int enable)
/*
- * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2010-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
/* Set active CPU cluster to G */
clrbits_le32(&flow->cluster_control, 1);
- /*
- * Switch system clock to PLLP_OUT4 (108 MHz), AVP will now run
- * at 108 MHz. This is glitch free as only the source is changed, no
- * special precaution needed.
- */
- val = (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_FIQ_SOURCE_SHIFT) |
- (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_IRQ_SOURCE_SHIFT) |
- (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_RUN_SOURCE_SHIFT) |
- (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_IDLE_SOURCE_SHIFT) |
- (SCLK_SYS_STATE_RUN << SCLK_SYS_STATE_SHIFT);
- writel(val, &clkrst->crc_sclk_brst_pol);
-
writel(SUPER_SCLK_ENB_MASK, &clkrst->crc_super_sclk_div);
debug("Setting up PLLX\n");
/*
- * Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2010-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
/* Set active CPU cluster to G */
clrbits_le32(flow->cluster_control, 1 << 0);
- /*
- * Switch system clock to PLLP_OUT4 (108 MHz), AVP will now run
- * at 108 MHz. This is glitch free as only the source is changed, no
- * special precaution needed.
- */
- val = (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_FIQ_SOURCE_SHIFT) |
- (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_IRQ_SOURCE_SHIFT) |
- (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_RUN_SOURCE_SHIFT) |
- (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_IDLE_SOURCE_SHIFT) |
- (SCLK_SYS_STATE_RUN << SCLK_SYS_STATE_SHIFT);
- writel(val, &clkrst->crc_sclk_brst_pol);
-
writel(SUPER_SCLK_ENB_MASK, &clkrst->crc_super_sclk_div);
val = (0 << CLK_SYS_RATE_HCLK_DISABLE_SHIFT) |
/*
- * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2010-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
/* Do any special system timer/TSC setup */
arch_timer_init();
}
+
+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.
+ */
+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);
+}
/*
- * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2010-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
struct clk_rst_ctlr *clkrst =
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+ tegra30_set_up_pllp();
+
/*
- * PLLP output frequency set to 408Mhz
* PLLC output frequency set to 600Mhz
* PLLD output frequency set to 925Mhz
*/
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, 600, 12, 0, 8);
clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12);
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);
clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12);
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);
clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12);
break;
/*
- * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2010-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
void clock_early_init(void)
{
- /*
- * 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;
- }
+ tegra30_set_up_pllp();
}
void arch_timer_init(void)
/*
- * (C) Copyright 2010,2011
+ * (C) Copyright 2010-2014
* NVIDIA Corporation <www.nvidia.com>
*
* SPDX-License-Identifier: GPL-2.0+
IN_408_OUT_9_6_DIVISOR = 83,
};
+#define PLLP_OUT1_RSTN_DIS (1 << 0)
+#define PLLP_OUT1_RSTN_EN (0 << 0)
+#define PLLP_OUT1_CLKEN (1 << 1)
+#define PLLP_OUT2_RSTN_DIS (1 << 16)
+#define PLLP_OUT2_RSTN_EN (0 << 16)
+#define PLLP_OUT2_CLKEN (1 << 17)
+
+#define PLLP_OUT3_RSTN_DIS (1 << 0)
+#define PLLP_OUT3_RSTN_EN (0 << 0)
+#define PLLP_OUT3_CLKEN (1 << 1)
+#define PLLP_OUT4_RSTN_DIS (1 << 16)
+#define PLLP_OUT4_RSTN_EN (0 << 16)
+#define PLLP_OUT4_CLKEN (1 << 17)
+
/* CLK_RST_CONTROLLER_UTMIP_PLL_CFG1_0 */
#define PLLU_POWERDOWN (1 << 16)
#define PLL_ENABLE_POWERDOWN (1 << 14)
/* SoC-specific TSC init */
void arch_timer_init(void);
+void tegra30_set_up_pllp(void);
+
#endif /* _TEGRA_CLOCK_H_ */
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