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u-boot/arch/arm/mach-uniphier/clk/pll-ld20.c

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ARM: uniphier: add PLL init code for LD20 SoC Initialize the DPLL (PLL for DRAM) in SPL, and others in U-Boot proper. Split the common code into pll-base-ld20.c for easier re-use. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-09-16 18:33:11 +00:00
/*
* Copyright (C) 2016 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
ARM: uniphier: replace <common.h> with <linux/delay.h> in pll settings The #include <common.h> was added for mdelay(). Later, the declaration of mdelay was moved to <linux/delay.h> by commit 5bc516ed661a ("delay: collect {m, n, u}delay declarations to include/linux/delay.h"). There is no need to include <common.h> now. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-26 08:57:58 +00:00
#include <linux/delay.h>
ARM: uniphier: add PLL init code for LD20 SoC Initialize the DPLL (PLL for DRAM) in SPL, and others in U-Boot proper. Split the common code into pll-base-ld20.c for easier re-use. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-09-16 18:33:11 +00:00
#include "../init.h"
#include "../sc64-regs.h"
#include "pll.h"
ARM: uniphier: move PLLCTRL register macros to each SoC .c file The new SoC PXs3 changed the address of PLL, but still uses the same PLL name. We can not define SC_*PLLCTRL in the common header. Move them to per-SoC .c file. Also, fix some PLL comments. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-26 08:57:59 +00:00
/* PLL type: SSC */
#define SC_CPLLCTRL (SC_BASE_ADDR | 0x1400) /* CPU/ARM */
#define SC_SPLLCTRL (SC_BASE_ADDR | 0x1410) /* misc */
#define SC_SPLL2CTRL (SC_BASE_ADDR | 0x1420) /* DSP */
#define SC_MPLLCTRL (SC_BASE_ADDR | 0x1430) /* Video codec */
#define SC_VPPLLCTRL (SC_BASE_ADDR | 0x1440) /* VPE etc. */
#define SC_GPPLLCTRL (SC_BASE_ADDR | 0x1450) /* GPU/Mali */
#define SC_DPLL0CTRL (SC_BASE_ADDR | 0x1460) /* DDR memory 0 */
#define SC_DPLL1CTRL (SC_BASE_ADDR | 0x1470) /* DDR memory 1 */
#define SC_DPLL2CTRL (SC_BASE_ADDR | 0x1480) /* DDR memory 2 */
/* PLL type: VPLL27 */
#define SC_VPLL27FCTRL (SC_BASE_ADDR | 0x1500)
#define SC_VPLL27ACTRL (SC_BASE_ADDR | 0x1520)
/* PLL type: DSPLL */
#define SC_VPLL8KCTRL (SC_BASE_ADDR | 0x1540)
#define SC_A2PLLCTRL (SC_BASE_ADDR | 0x15C0)
ARM: uniphier: remove unneeded argument of uniphier_ld20_pll_init() At first, we thought the LD20 PLL setting would be board dependent, but this argument turned out unneeded after all. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-01-15 05:59:02 +00:00
void uniphier_ld20_pll_init(void)
ARM: uniphier: add PLL init code for LD20 SoC Initialize the DPLL (PLL for DRAM) in SPL, and others in U-Boot proper. Split the common code into pll-base-ld20.c for easier re-use. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-09-16 18:33:11 +00:00
{
uniphier_ld20_sscpll_init(SC_CPLLCTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 4);
/* do nothing for SPLL */
uniphier_ld20_sscpll_init(SC_SPLL2CTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 4);
uniphier_ld20_sscpll_init(SC_MPLLCTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 2);
uniphier_ld20_sscpll_init(SC_VPPLLCTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 4);
uniphier_ld20_sscpll_init(SC_GPPLLCTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 2);
mdelay(1);
ARM: uniphier: enable SSC for more PLLs for LD20 SoC For Electro-Magnetic Compatibility. Set CPLL, SPLL2, MPLL, VPPLL, GPPLL, DPLL* to SSC rate 1 percent. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-10-27 14:47:00 +00:00
uniphier_ld20_sscpll_ssc_en(SC_CPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_SPLL2CTRL);
uniphier_ld20_sscpll_ssc_en(SC_MPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_VPPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_GPPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_DPLL0CTRL);
uniphier_ld20_sscpll_ssc_en(SC_DPLL1CTRL);
uniphier_ld20_sscpll_ssc_en(SC_DPLL2CTRL);
ARM: uniphier: add PLL init code for LD20 SoC Initialize the DPLL (PLL for DRAM) in SPL, and others in U-Boot proper. Split the common code into pll-base-ld20.c for easier re-use. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-09-16 18:33:11 +00:00
uniphier_ld20_vpll27_init(SC_VPLL27FCTRL);
uniphier_ld20_vpll27_init(SC_VPLL27ACTRL);
uniphier_ld20_dspll_init(SC_VPLL8KCTRL);
uniphier_ld20_dspll_init(SC_A2PLLCTRL);
}
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