[v1 06/17] drivers: clk: Add memory clock driver for Intel N5X device
Lim, Elly Siew Chin
elly.siew.chin.lim at intel.com
Thu Apr 29 13:59:20 CEST 2021
> -----Original Message-----
> From: Tan, Ley Foon <ley.foon.tan at intel.com>
> Sent: Thursday, April 8, 2021 6:32 PM
> To: Lim, Elly Siew Chin <elly.siew.chin.lim at intel.com>; u-boot at lists.denx.de
> Cc: Marek Vasut <marex at denx.de>; See, Chin Liang
> <chin.liang.see at intel.com>; Simon Goldschmidt
> <simon.k.r.goldschmidt at gmail.com>; Chee, Tien Fong
> <tien.fong.chee at intel.com>; Westergreen, Dalon
> <dalon.westergreen at intel.com>; Simon Glass <sjg at chromium.org>; Gan,
> Yau Wai <yau.wai.gan at intel.com>
> Subject: RE: [v1 06/17] drivers: clk: Add memory clock driver for Intel N5X
> device
>
>
>
> > -----Original Message-----
> > From: Lim, Elly Siew Chin <elly.siew.chin.lim at intel.com>
> > Sent: Wednesday, March 31, 2021 10:39 PM
> > To: u-boot at lists.denx.de
> > Cc: Marek Vasut <marex at denx.de>; Tan, Ley Foon
> > <ley.foon.tan at intel.com>; See, Chin Liang <chin.liang.see at intel.com>;
> > Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>; Chee, Tien Fong
> > <tien.fong.chee at intel.com>; Westergreen, Dalon
> > <dalon.westergreen at intel.com>; Simon Glass <sjg at chromium.org>; Gan,
> > Yau Wai <yau.wai.gan at intel.com>; Lim, Elly Siew Chin
> > <elly.siew.chin.lim at intel.com>
> > Subject: [v1 06/17] drivers: clk: Add memory clock driver for Intel
> > N5X device
> >
> > Add memory clock manager driver for N5X. Provides memory clock
> > initialization and enable functions.
> >
> > Signed-off-by: Siew Chin Lim <elly.siew.chin.lim at intel.com>
> > ---
> > drivers/clk/altera/Makefile | 1 +
> > drivers/clk/altera/clk-mem-n5x.c | 136
> > +++++++++++++++++++++++++++++++++++++++
> > drivers/clk/altera/clk-mem-n5x.h | 84 ++++++++++++++++++++++++
> > 3 files changed, 221 insertions(+)
> > create mode 100644 drivers/clk/altera/clk-mem-n5x.c create mode
> > 100644 drivers/clk/altera/clk-mem-n5x.h
> >
> > diff --git a/drivers/clk/altera/Makefile b/drivers/clk/altera/Makefile
> > index
> > 38cd730685..33db092918 100644
> > --- a/drivers/clk/altera/Makefile
> > +++ b/drivers/clk/altera/Makefile
> > @@ -6,3 +6,4 @@
> > obj-$(CONFIG_TARGET_SOCFPGA_AGILEX) += clk-agilex.o
> > obj-$(CONFIG_TARGET_SOCFPGA_ARRIA10) += clk-arria10.o
> > obj-$(CONFIG_TARGET_SOCFPGA_N5X) += clk-n5x.o
> > +obj-$(CONFIG_TARGET_SOCFPGA_N5X) += clk-mem-n5x.o
> > diff --git a/drivers/clk/altera/clk-mem-n5x.c
> > b/drivers/clk/altera/clk-mem- n5x.c new file mode 100644 index
> > 0000000000..ca44998641
> > --- /dev/null
> > +++ b/drivers/clk/altera/clk-mem-n5x.c
> > @@ -0,0 +1,136 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Copyright (C) 2020-2021 Intel Corporation <www.intel.com> */
> > +
> > +#include <common.h>
> > +#include <asm/arch/clock_manager.h>
> > +#include <asm/global_data.h>
> > +#include <asm/io.h>
> > +#include "clk-mem-n5x.h"
> > +#include <clk-uclass.h>
> > +#include <dm.h>
> > +#include <dm/lists.h>
> > +#include <dm/util.h>
> > +#include <dt-bindings/clock/n5x-clock.h>
> Sorting the include name.
>
> > +
> > +DECLARE_GLOBAL_DATA_PTR;
> > +
> > +struct socfpga_mem_clk_plat {
> > + void __iomem *regs;
> > +};
> > +
> > +++ b/drivers/clk/altera/clk-mem-n5x.h
> > @@ -0,0 +1,84 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * Copyright (C) 2020-2021 Intel Corporation <www.intel.com> */
> > +
> > +#ifndef _CLK_MEM_N5X_
> > +#define _CLK_MEM_N5X_
> > +
> > +#ifndef __ASSEMBLY__
> > +#include <linux/bitops.h>
> > +#endif
> > +
> > +/* Clock Manager registers */
> > +#define MEMCLKMGR_STAT 4
> > +#define MEMCLKMGR_INTRGEN 8
> > +#define MEMCLKMGR_INTRMSK 0x0C
> For consistency, use small letter for 0x0C.
>
> > +#define MEMCLKMGR_INTRCLR 0x10
> > +#define MEMCLKMGR_INTRSTS 0x14
> > +#define MEMCLKMGR_INTRSTK 0x18
> > +#define MEMCLKMGR_INTRRAW 0x1C
> Same here.
>
>
>
> > +
> > +/* Memory Clock Manager PPL group registers */
> > +#define MEMCLKMGR_MEMPLL_EN 0x20
> > +#define MEMCLKMGR_MEMPLL_ENS 0x24
> > +#define MEMCLKMGR_MEMPLL_ENR 0x28
> > +#define MEMCLKMGR_MEMPLL_BYPASS 0x2c
> > +#define MEMCLKMGR_MEMPLL_BYPASSS 0x30
> > +#define MEMCLKMGR_MEMPLL_BYPASSR 0x34
> > +#define MEMCLKMGR_MEMPLL_MEMDIV 0x38
> > +#define MEMCLKMGR_MEMPLL_PLLGLOB 0x3c
> > +#define MEMCLKMGR_MEMPLL_PLLCTRL 0x40
> > +#define MEMCLKMGR_MEMPLL_PLLDIV 0x44
> > +#define MEMCLKMGR_MEMPLL_PLLOUTDIV 0x48
> > +#define MEMCLKMGR_MEMPLL_EXTCNTRST 0x4c
> > +
> > +#define MEMCLKMGR_CTRL_BOOTMODE BIT(0)
> > +
> > +#define MEMCLKMGR_STAT_MEMPLL_LOCKED BIT(8)
> > +
> > +#define MEMCLKMGR_STAT_ALLPLL_LOCKED_MASK \
> > + (MEMCLKMGR_STAT_MEMPLL_LOCKED)
> > +
> > +#define MEMCLKMGR_INTER_MEMPLLLOCKED_MASK
> > 0x00000001
> > +#define MEMCLKMGR_INTER_MEMPLLLOST_MASK
> > 0x00000004
> > +
> > +#define MEMCLKMGR_BYPASS_MEMPLL_ALL 0x1
> > +
> > +#define MEMCLKMGR_MEMDIV_MPFEDIV_OFFSET
> 0
> > +#define MEMCLKMGR_MEMDIV_APBDIV_OFFSET 4
> > +#define MEMCLKMGR_MEMDIV_DFICTRLDIV_OFFSET 8
> > +#define MEMCLKMGR_MEMDIV_DFIDIV_OFFSET 12
> > +#define MEMCLKMGR_MEMDIV_DFICTRLDIV_MASK 0x1
> > +#define MEMCLKMGR_MEMDIV_DIVIDER_MASK 0x3
> > +
> > +#define MEMCLKMGR_PLLGLOB_PSRC_MASK
> > GENMASK(17, 16)
> > +#define MEMCLKMGR_PLLGLOB_PSRC_OFFSET 16
> > +#define MEMCLKMGR_PLLGLOB_LOSTLOCK_BYPASS_EN_MASK BIT(28)
> > +#define MEMCLKMGR_PLLGLOB_CLR_LOSTLOCK_BYPASS_MASK BIT(29)
> > +
> > +#define MEMCLKMGR_PSRC_EOSC1 0
> > +#define MEMCLKMGR_PSRC_INTOSC 1
> > +#define MEMCLKMGR_PSRC_F2S 2
> > +
> > +#define MEMCLKMGR_PLLCTRL_BYPASS_MASK BIT(0)
> > +#define MEMCLKMGR_PLLCTRL_RST_N_MASK BIT(1)
> > +
> > +#define MEMCLKMGR_PLLDIV_DIVR_MASK
> GENMASK(5,
> > 0)
> > +#define MEMCLKMGR_PLLDIV_DIVF_MASK
> GENMASK(16,
> > 8)
> > +#define MEMCLKMGR_PLLDIV_DIVQ_MASK
> GENMASK(26,
> > 24)
> > +#define MEMCLKMGR_PLLDIV_RANGE_MASK
> > GENMASK(30, 28)
> > +
> > +#define MEMCLKMGR_PLLDIV_DIVR_OFFSET 0
> > +#define MEMCLKMGR_PLLDIV_DIVF_OFFSET 8
> > +#define MEMCLKMGR_PLLDIV_DIVQ_QDIV_OFFSET 24
> > +#define MEMCLKMGR_PLLDIV_RANGE_OFFSET 28
> > +
> > +#define MEMCLKMGR_PLLOUTDIV_C0CNT_MASK
> > GENMASK(4, 0)
> > +#define MEMCLKMGR_PLLOUTDIV_C0CNT_OFFSET 0
> > +
> > +#define MEMCLKMGR_EXTCNTRST_C0CNTRST BIT(7)
> > +#define MEMCLKMGR_EXTCNTRST_ALLCNTRST \
> > + (MEMCLKMGR_EXTCNTRST_C0CNTRST)
> > +
> > +#endif /* _CLK_MEM_N5X_ */
> > --
> > 2.13.0
Noted, I will update the code in new review.
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