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ARM: uniphier: add PLL init code for LD11 SoC 

- Initialize PLLs (SPL initializes only DPLL to save the precious
   SPL memory footprint)
 - Adjust CPLL/MPLL to the final tape-out frequency
 - Set the Cortex-A53 clock to the maximum frequency since it is
   running at 500MHz (SPLL/4) on startup

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2016-09-22 07:42:19 +09:00
parent 0298f4c003
commit c72f4d4c2e
7 changed files with 71 additions and 7 deletions
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1
arch/arm/mach-uniphier/board_init.c
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@ -128,6 +128,7 @@ int board_init(void)
sg_set_pinsel(153, 14, 8, 4); /* XIRQ4 -> XIRQ4 */
sg_set_iectrl(153);
led_puts("U1");
uniphier_ld11_pll_init();
uniphier_ld11_clk_init();
break;
#endif

5
arch/arm/mach-uniphier/clk/Makefile
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@ -11,7 +11,7 @@ obj-$(CONFIG_ARCH_UNIPHIER_SLD8) += early-clk-ld4.o dpll-sld8.o
obj-$(CONFIG_ARCH_UNIPHIER_PRO5) += early-clk-pro5.o
obj-$(CONFIG_ARCH_UNIPHIER_PXS2) += early-clk-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD6B) += early-clk-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD11) += early-clk-ld11.o
obj-$(CONFIG_ARCH_UNIPHIER_LD11) += early-clk-ld11.o dpll-ld11.o
obj-$(CONFIG_ARCH_UNIPHIER_LD20) += early-clk-ld20.o dpll-ld20.o
else
@ -23,9 +23,10 @@ obj-$(CONFIG_ARCH_UNIPHIER_SLD8) += clk-ld4.o pll-ld4.o dpll-tail.o
obj-$(CONFIG_ARCH_UNIPHIER_PRO5) += clk-pro5.o
obj-$(CONFIG_ARCH_UNIPHIER_PXS2) += clk-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD6B) += clk-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD11) += clk-ld11.o
obj-$(CONFIG_ARCH_UNIPHIER_LD11) += clk-ld11.o pll-ld11.o
obj-$(CONFIG_ARCH_UNIPHIER_LD20) += clk-ld20.o pll-ld20.o
endif
obj-$(CONFIG_ARCH_UNIPHIER_LD11) += pll-base-ld20.o
obj-$(CONFIG_ARCH_UNIPHIER_LD20) += pll-base-ld20.o

16
arch/arm/mach-uniphier/clk/dpll-ld11.c Normal file
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@ -0,0 +1,16 @@
/*
* Copyright (C) 2016 Socionext Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include "../init.h"
#include "../sc64-regs.h"
#include "pll.h"
int uniphier_ld11_dpll_init(const struct uniphier_board_data *bd)
{
uniphier_ld20_sscpll_init(SC_DPLLCTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 2);
return 0;
}

32
arch/arm/mach-uniphier/clk/pll-ld11.c Normal file
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@ -0,0 +1,32 @@
/*
* Copyright (C) 2016 Socionext Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/io.h>
#include "../init.h"
#include "../sc64-regs.h"
#include "pll.h"
void uniphier_ld11_pll_init(void)
{
uniphier_ld20_sscpll_init(SC_CPLLCTRL, 1960, 1, 2); /* 2000MHz -> 1960MHz */
/* do nothing for SPLL */
uniphier_ld20_sscpll_init(SC_MPLLCTRL, 1600, 1, 2); /* 1500MHz -> 1600MHz */
uniphier_ld20_sscpll_init(SC_VSPLLCTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 2);
mdelay(1);
uniphier_ld20_sscpll_ssc_en(SC_CPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_MPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_VSPLLCTRL);
uniphier_ld20_vpll27_init(SC_VPLL27FCTRL);
uniphier_ld20_vpll27_init(SC_VPLL27ACTRL);
writel(0, SC_CA53_GEARSET); /* Gear0: CPLL/2 */
writel(SC_CA_GEARUPD, SC_CA53_GEARUPD);
}

2
arch/arm/mach-uniphier/init.h
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@ -87,6 +87,7 @@ int uniphier_sld3_dpll_init(const struct uniphier_board_data *bd);
int uniphier_ld4_dpll_init(const struct uniphier_board_data *bd);
int uniphier_pro4_dpll_init(const struct uniphier_board_data *bd);
int uniphier_sld8_dpll_init(const struct uniphier_board_data *bd);
int uniphier_ld11_dpll_init(const struct uniphier_board_data *bd);
int uniphier_ld20_dpll_init(const struct uniphier_board_data *bd);
int uniphier_ld4_early_clk_init(const struct uniphier_board_data *bd);
@ -105,6 +106,7 @@ int uniphier_ld11_umc_init(const struct uniphier_board_data *bd);
void uniphier_sld3_pll_init(void);
void uniphier_ld4_pll_init(void);
void uniphier_pro4_pll_init(void);
void uniphier_ld11_pll_init(void);
int uniphier_ld20_pll_init(const struct uniphier_board_data *bd);
void uniphier_ld4_clk_init(void);

6
arch/arm/mach-uniphier/init/init-ld11.c
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@ -31,12 +31,14 @@ int uniphier_ld11_init(const struct uniphier_board_data *bd)
led_puts("L2");
led_puts("L3");
#ifdef CONFIG_SPL_SERIAL_SUPPORT
preloader_console_init();
#endif
led_puts("L3");
uniphier_ld11_dpll_init(bd);
led_puts("L4");
{

16
arch/arm/mach-uniphier/sc64-regs.h
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@ -13,12 +13,14 @@
#define SC_BASE_ADDR 0x61840000
/* PLL type: SSC */
#define SC_CPLLCTRL (SC_BASE_ADDR | 0x1400) /* LD20: CPU/ARM */
#define SC_SPLLCTRL (SC_BASE_ADDR | 0x1410) /* LD20: misc */
#define SC_CPLLCTRL (SC_BASE_ADDR | 0x1400) /* LD11/20: CPU/ARM */
#define SC_SPLLCTRL (SC_BASE_ADDR | 0x1410) /* LD11/20: misc */
#define SC_SPLL2CTRL (SC_BASE_ADDR | 0x1420) /* LD20: IPP */
#define SC_MPLLCTRL (SC_BASE_ADDR | 0x1430) /* LD20: Video codec */
#define SC_MPLLCTRL (SC_BASE_ADDR | 0x1430) /* LD11/20: Video codec */
#define SC_VSPLLCTRL (SC_BASE_ADDR | 0x1440) /* LD11 */
#define SC_VPPLLCTRL (SC_BASE_ADDR | 0x1440) /* LD20: VPE etc. */
#define SC_GPPLLCTRL (SC_BASE_ADDR | 0x1450) /* LD20: GPU/Mali */
#define SC_DPLLCTRL (SC_BASE_ADDR | 0x1460) /* LD11: DDR memory */
#define SC_DPLL0CTRL (SC_BASE_ADDR | 0x1460) /* LD20: DDR memory 0 */
#define SC_DPLL1CTRL (SC_BASE_ADDR | 0x1470) /* LD20: DDR memory 1 */
#define SC_DPLL2CTRL (SC_BASE_ADDR | 0x1480) /* LD20: DDR memory 2 */
@ -61,4 +63,12 @@
#define SC_CLKCTRL7_UMC31 (1 << 1)
#define SC_CLKCTRL7_UMC30 (1 << 0)
#define SC_CA72_GEARST (SC_BASE_ADDR | 0x8080)
#define SC_CA72_GEARSET (SC_BASE_ADDR | 0x8084)
#define SC_CA72_GEARUPD (SC_BASE_ADDR | 0x8088)
#define SC_CA53_GEARST (SC_BASE_ADDR | 0x8080)
#define SC_CA53_GEARSET (SC_BASE_ADDR | 0x8084)
#define SC_CA53_GEARUPD (SC_BASE_ADDR | 0x8088)
#define SC_CA_GEARUPD (1 << 0)
#endif /* SC64_REGS_H */