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u-boot/arch/arm/mach-uniphier/clk/pll-ld11.c

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0+
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>
2016-09-21 22:42:19 +00:00
/*
* Copyright (C) 2016 Socionext Inc.
*/
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 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>
2016-09-21 22:42:19 +00:00
#include <linux/io.h>
#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 */
ARM: uniphier: de-couple SC macros into base address and offset The SC_* macros represent the address of SysCtrl registers. For a planned new SoC, its base address will be changed. Turn the SC_* macros into the offset from the base address. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-07-10 11:07:41 +00:00
#define SC_CPLLCTRL 0x1400 /* CPU/ARM */
#define SC_SPLLCTRL 0x1410 /* misc */
#define SC_MPLLCTRL 0x1430 /* DSP */
#define SC_VSPLLCTRL 0x1440 /* Video codec, VPE etc. */
#define SC_DPLLCTRL 0x1460 /* DDR memory */
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: VPLL27 */
ARM: uniphier: de-couple SC macros into base address and offset The SC_* macros represent the address of SysCtrl registers. For a planned new SoC, its base address will be changed. Turn the SC_* macros into the offset from the base address. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-07-10 11:07:41 +00:00
#define SC_VPLL27FCTRL 0x1500
#define SC_VPLL27ACTRL 0x1520
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
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>
2016-09-21 22:42:19 +00:00
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);
ARM: uniphier: set up charge pump current for MPLL of LD11 SoC Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-02-21 14:00:35 +00:00
uniphier_ld20_sscpll_set_regi(SC_MPLLCTRL, 5);
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>
2016-09-21 22:42:19 +00:00
mdelay(1);
uniphier_ld20_sscpll_ssc_en(SC_CPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_MPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_VSPLLCTRL);
ARM: uniphier: enable SSC for DPLL (DRAM PLL) on LD11 SoC For Electro-Magnetic Compatibility test. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-10-08 04:25:23 +00:00
uniphier_ld20_sscpll_ssc_en(SC_DPLLCTRL);
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>
2016-09-21 22:42:19 +00:00
uniphier_ld20_vpll27_init(SC_VPLL27FCTRL);
uniphier_ld20_vpll27_init(SC_VPLL27ACTRL);
ARM: uniphier: de-couple SC macros into base address and offset The SC_* macros represent the address of SysCtrl registers. For a planned new SoC, its base address will be changed. Turn the SC_* macros into the offset from the base address. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-07-10 11:07:41 +00:00
writel(0, sc_base + SC_CA53_GEARSET); /* Gear0: CPLL/2 */
writel(SC_CA_GEARUPD, sc_base + SC_CA53_GEARUPD);
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>
2016-09-21 22:42:19 +00:00
}
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