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u-boot/arch/powerpc/cpu/mpc83xx/speed.c
Tom Rini 2f8a6db5d8 Finish conversion of CONFIG_SYS_CLK_FREQ to Kconfig 
In order to finish moving this symbol to Kconfig for all platforms, we
need to do a few more things.  First, for all platforms that define this
to a function, introduce CONFIG_DYNAMIC_SYS_CLK_FREQ, similar to
CONFIG_DYNAMIC_DDR_CLK_FREQ and populate clock_legacy.h.  This entails
also switching all users from CONFIG_SYS_CLK_FREQ to get_board_sys_clk()
and updating a few preprocessor tests.

With that done, all platforms that define a value here can be converted
to Kconfig, and a fall-back of zero is sufficiently safe to use (and
what is used today in cases where code may or may not have this
available).  Make sure that code which calls this function includes
<clock_legacy.h> to get the prototype.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000-2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
*/
#ifndef CONFIG_CLK_MPC83XX
#include <common.h>
#include <clock_legacy.h>
#include <mpc83xx.h>
#include <command.h>
#include <vsprintf.h>
#include <asm/global_data.h>
#include <asm/processor.h>
DECLARE_GLOBAL_DATA_PTR;
/* ----------------------------------------------------------------- */
typedef enum {
_unk,
_off,
_byp,
_x8,
_x4,
_x2,
_x1,
_1x,
_1_5x,
_2x,
_2_5x,
_3x
} mult_t;
typedef struct {
mult_t core_csb_ratio;
mult_t vco_divider;
} corecnf_t;
static corecnf_t corecnf_tab[] = {
{_byp, _byp}, /* 0x00 */
{_byp, _byp}, /* 0x01 */
{_byp, _byp}, /* 0x02 */
{_byp, _byp}, /* 0x03 */
{_byp, _byp}, /* 0x04 */
{_byp, _byp}, /* 0x05 */
{_byp, _byp}, /* 0x06 */
{_byp, _byp}, /* 0x07 */
{_1x, _x2}, /* 0x08 */
{_1x, _x4}, /* 0x09 */
{_1x, _x8}, /* 0x0A */
{_1x, _x8}, /* 0x0B */
{_1_5x, _x2}, /* 0x0C */
{_1_5x, _x4}, /* 0x0D */
{_1_5x, _x8}, /* 0x0E */
{_1_5x, _x8}, /* 0x0F */
{_2x, _x2}, /* 0x10 */
{_2x, _x4}, /* 0x11 */
{_2x, _x8}, /* 0x12 */
{_2x, _x8}, /* 0x13 */
{_2_5x, _x2}, /* 0x14 */
{_2_5x, _x4}, /* 0x15 */
{_2_5x, _x8}, /* 0x16 */
{_2_5x, _x8}, /* 0x17 */
{_3x, _x2}, /* 0x18 */
{_3x, _x4}, /* 0x19 */
{_3x, _x8}, /* 0x1A */
{_3x, _x8}, /* 0x1B */
};
/* ----------------------------------------------------------------- */
/*
*
*/
int get_clocks(void)
{
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
u32 pci_sync_in;
u8 spmf;
u8 clkin_div;
u32 sccr;
u32 corecnf_tab_index;
u8 corepll;
u32 lcrr;
u32 csb_clk;
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC834X) || defined(CONFIG_ARCH_MPC837X)
u32 tsec1_clk;
u32 tsec2_clk;
u32 usbdr_clk;
#elif defined(CONFIG_ARCH_MPC8309)
u32 usbdr_clk;
#endif
#ifdef CONFIG_ARCH_MPC834X
u32 usbmph_clk;
#endif
u32 core_clk;
u32 i2c1_clk;
#if !defined(CONFIG_ARCH_MPC832X)
u32 i2c2_clk;
#endif
#if defined(CONFIG_FSL_ESDHC)
u32 sdhc_clk;
#endif
#if !defined(CONFIG_ARCH_MPC8309)
u32 enc_clk;
#endif
u32 lbiu_clk;
u32 lclk_clk;
u32 mem_clk;
#if defined(CONFIG_ARCH_MPC8360)
u32 mem_sec_clk;
#endif
#if defined(CONFIG_QE)
u32 qepmf;
u32 qepdf;
u32 qe_clk;
u32 brg_clk;
#endif
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC837X)
u32 pciexp1_clk;
u32 pciexp2_clk;
#endif
#if defined(CONFIG_ARCH_MPC837X)
u32 sata_clk;
#endif
if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
return -1;
clkin_div = ((im->clk.spmr & SPMR_CKID) >> SPMR_CKID_SHIFT);
if (im->reset.rcwh & HRCWH_PCI_HOST) {
#if CONFIG_SYS_CLK_FREQ != 0
pci_sync_in = get_board_sys_clk() / (1 + clkin_div);
#else
pci_sync_in = 0xDEADBEEF;
#endif
} else {
#if defined(CONFIG_83XX_PCICLK)
pci_sync_in = CONFIG_83XX_PCICLK;
#else
pci_sync_in = 0xDEADBEEF;
#endif
}
spmf = (im->clk.spmr & SPMR_SPMF) >> SPMR_SPMF_SHIFT;
csb_clk = pci_sync_in * (1 + clkin_div) * spmf;
sccr = im->clk.sccr;
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC834X) || defined(CONFIG_ARCH_MPC837X)
switch ((sccr & SCCR_TSEC1CM) >> SCCR_TSEC1CM_SHIFT) {
case 0:
tsec1_clk = 0;
break;
case 1:
tsec1_clk = csb_clk;
break;
case 2:
tsec1_clk = csb_clk / 2;
break;
case 3:
tsec1_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_TSEC1CM value */
return -2;
}
#endif
#if defined(CONFIG_ARCH_MPC830X) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC834X) || defined(CONFIG_ARCH_MPC837X)
switch ((sccr & SCCR_USBDRCM) >> SCCR_USBDRCM_SHIFT) {
case 0:
usbdr_clk = 0;
break;
case 1:
usbdr_clk = csb_clk;
break;
case 2:
usbdr_clk = csb_clk / 2;
break;
case 3:
usbdr_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_USBDRCM value */
return -3;
}
#endif
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC834X) || \
defined(CONFIG_ARCH_MPC837X)
switch ((sccr & SCCR_TSEC2CM) >> SCCR_TSEC2CM_SHIFT) {
case 0:
tsec2_clk = 0;
break;
case 1:
tsec2_clk = csb_clk;
break;
case 2:
tsec2_clk = csb_clk / 2;
break;
case 3:
tsec2_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_TSEC2CM value */
return -4;
}
#elif defined(CONFIG_ARCH_MPC8313)
tsec2_clk = tsec1_clk;
if (!(sccr & SCCR_TSEC1ON))
tsec1_clk = 0;
if (!(sccr & SCCR_TSEC2ON))
tsec2_clk = 0;
#endif
#if defined(CONFIG_ARCH_MPC834X)
switch ((sccr & SCCR_USBMPHCM) >> SCCR_USBMPHCM_SHIFT) {
case 0:
usbmph_clk = 0;
break;
case 1:
usbmph_clk = csb_clk;
break;
case 2:
usbmph_clk = csb_clk / 2;
break;
case 3:
usbmph_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_USBMPHCM value */
return -5;
}
if (usbmph_clk != 0 && usbdr_clk != 0 && usbmph_clk != usbdr_clk) {
/* if USB MPH clock is not disabled and
* USB DR clock is not disabled then
* USB MPH & USB DR must have the same rate
*/
return -6;
}
#endif
#if !defined(CONFIG_ARCH_MPC8309)
switch ((sccr & SCCR_ENCCM) >> SCCR_ENCCM_SHIFT) {
case 0:
enc_clk = 0;
break;
case 1:
enc_clk = csb_clk;
break;
case 2:
enc_clk = csb_clk / 2;
break;
case 3:
enc_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_ENCCM value */
return -7;
}
#endif
#if defined(CONFIG_FSL_ESDHC)
switch ((sccr & SCCR_SDHCCM) >> SCCR_SDHCCM_SHIFT) {
case 0:
sdhc_clk = 0;
break;
case 1:
sdhc_clk = csb_clk;
break;
case 2:
sdhc_clk = csb_clk / 2;
break;
case 3:
sdhc_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_SDHCCM value */
return -8;
}
#endif
#if defined(CONFIG_ARCH_MPC834X)
i2c1_clk = tsec2_clk;
#elif defined(CONFIG_ARCH_MPC8360)
i2c1_clk = csb_clk;
#elif defined(CONFIG_ARCH_MPC832X)
i2c1_clk = enc_clk;
#elif defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X)
i2c1_clk = enc_clk;
#elif defined(CONFIG_FSL_ESDHC)
i2c1_clk = sdhc_clk;
#elif defined(CONFIG_ARCH_MPC837X)
i2c1_clk = enc_clk;
#elif defined(CONFIG_ARCH_MPC8309)
i2c1_clk = csb_clk;
#endif
#if !defined(CONFIG_ARCH_MPC832X)
i2c2_clk = csb_clk; /* i2c-2 clk is equal to csb clk */
#endif
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC837X)
switch ((sccr & SCCR_PCIEXP1CM) >> SCCR_PCIEXP1CM_SHIFT) {
case 0:
pciexp1_clk = 0;
break;
case 1:
pciexp1_clk = csb_clk;
break;
case 2:
pciexp1_clk = csb_clk / 2;
break;
case 3:
pciexp1_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_PCIEXP1CM value */
return -9;
}
switch ((sccr & SCCR_PCIEXP2CM) >> SCCR_PCIEXP2CM_SHIFT) {
case 0:
pciexp2_clk = 0;
break;
case 1:
pciexp2_clk = csb_clk;
break;
case 2:
pciexp2_clk = csb_clk / 2;
break;
case 3:
pciexp2_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_PCIEXP2CM value */
return -10;
}
#endif
#if defined(CONFIG_ARCH_MPC837X)
switch ((sccr & SCCR_SATA1CM) >> SCCR_SATA1CM_SHIFT) {
case 0:
sata_clk = 0;
break;
case 1:
sata_clk = csb_clk;
break;
case 2:
sata_clk = csb_clk / 2;
break;
case 3:
sata_clk = csb_clk / 3;
break;
default:
/* unknown SCCR_SATA1CM value */
return -11;
}
#endif
lbiu_clk = csb_clk *
(1 + ((im->clk.spmr & SPMR_LBIUCM) >> SPMR_LBIUCM_SHIFT));
lcrr = (im->im_lbc.lcrr & LCRR_CLKDIV) >> LCRR_CLKDIV_SHIFT;
switch (lcrr) {
case 2:
case 4:
case 8:
lclk_clk = lbiu_clk / lcrr;
break;
default:
/* unknown lcrr */
return -12;
}
mem_clk = csb_clk *
(1 + ((im->clk.spmr & SPMR_DDRCM) >> SPMR_DDRCM_SHIFT));
corepll = (im->clk.spmr & SPMR_COREPLL) >> SPMR_COREPLL_SHIFT;
#if defined(CONFIG_ARCH_MPC8360)
mem_sec_clk = csb_clk * (1 +
((im->clk.spmr & SPMR_LBIUCM) >> SPMR_LBIUCM_SHIFT));
#endif
corecnf_tab_index = ((corepll & 0x1F) << 2) | ((corepll & 0x60) >> 5);
if (corecnf_tab_index > (ARRAY_SIZE(corecnf_tab))) {
/* corecnf_tab_index is too high, possibly wrong value */
return -11;
}
switch (corecnf_tab[corecnf_tab_index].core_csb_ratio) {
case _byp:
case _x1:
case _1x:
core_clk = csb_clk;
break;
case _1_5x:
core_clk = (3 * csb_clk) / 2;
break;
case _2x:
core_clk = 2 * csb_clk;
break;
case _2_5x:
core_clk = (5 * csb_clk) / 2;
break;
case _3x:
core_clk = 3 * csb_clk;
break;
default:
/* unknown core to csb ratio */
return -13;
}
#if defined(CONFIG_QE)
qepmf = (im->clk.spmr & SPMR_CEPMF) >> SPMR_CEPMF_SHIFT;
qepdf = (im->clk.spmr & SPMR_CEPDF) >> SPMR_CEPDF_SHIFT;
qe_clk = (pci_sync_in * qepmf) / (1 + qepdf);
brg_clk = qe_clk / 2;
#endif
gd->arch.csb_clk = csb_clk;
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC834X) || defined(CONFIG_ARCH_MPC837X)
gd->arch.tsec1_clk = tsec1_clk;
gd->arch.tsec2_clk = tsec2_clk;
gd->arch.usbdr_clk = usbdr_clk;
#elif defined(CONFIG_ARCH_MPC8309)
gd->arch.usbdr_clk = usbdr_clk;
#endif
#if defined(CONFIG_ARCH_MPC834X)
gd->arch.usbmph_clk = usbmph_clk;
#endif
#if defined(CONFIG_FSL_ESDHC)
gd->arch.sdhc_clk = sdhc_clk;
#endif
gd->arch.core_clk = core_clk;
gd->arch.i2c1_clk = i2c1_clk;
#if !defined(CONFIG_ARCH_MPC832X)
gd->arch.i2c2_clk = i2c2_clk;
#endif
#if !defined(CONFIG_ARCH_MPC8309)
gd->arch.enc_clk = enc_clk;
#endif
gd->arch.lbiu_clk = lbiu_clk;
gd->arch.lclk_clk = lclk_clk;
gd->mem_clk = mem_clk;
#if defined(CONFIG_ARCH_MPC8360)
gd->arch.mem_sec_clk = mem_sec_clk;
#endif
#if defined(CONFIG_QE)
gd->arch.qe_clk = qe_clk;
gd->arch.brg_clk = brg_clk;
#endif
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC837X)
gd->arch.pciexp1_clk = pciexp1_clk;
gd->arch.pciexp2_clk = pciexp2_clk;
#endif
#if defined(CONFIG_ARCH_MPC837X)
gd->arch.sata_clk = sata_clk;
#endif
gd->pci_clk = pci_sync_in;
gd->cpu_clk = gd->arch.core_clk;
gd->bus_clk = gd->arch.csb_clk;
return 0;
}
/********************************************
* get_bus_freq
* return system bus freq in Hz
*********************************************/
ulong get_bus_freq(ulong dummy)
{
return gd->arch.csb_clk;
}
/********************************************
* get_ddr_freq
* return ddr bus freq in Hz
*********************************************/
ulong get_ddr_freq(ulong dummy)
{
return gd->mem_clk;
}
int get_serial_clock(void)
{
return get_bus_freq(0);
}
static int do_clocks(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char buf[32];
printf("Clock configuration:\n");
printf(" Core: %-4s MHz\n",
strmhz(buf, gd->arch.core_clk));
printf(" Coherent System Bus: %-4s MHz\n",
strmhz(buf, gd->arch.csb_clk));
#if defined(CONFIG_QE)
printf(" QE: %-4s MHz\n",
strmhz(buf, gd->arch.qe_clk));
printf(" BRG: %-4s MHz\n",
strmhz(buf, gd->arch.brg_clk));
#endif
printf(" Local Bus Controller:%-4s MHz\n",
strmhz(buf, gd->arch.lbiu_clk));
printf(" Local Bus: %-4s MHz\n",
strmhz(buf, gd->arch.lclk_clk));
printf(" DDR: %-4s MHz\n", strmhz(buf, gd->mem_clk));
#if defined(CONFIG_ARCH_MPC8360)
printf(" DDR Secondary: %-4s MHz\n",
strmhz(buf, gd->arch.mem_sec_clk));
#endif
#if !defined(CONFIG_ARCH_MPC8309)
printf(" SEC: %-4s MHz\n",
strmhz(buf, gd->arch.enc_clk));
#endif
printf(" I2C1: %-4s MHz\n",
strmhz(buf, gd->arch.i2c1_clk));
#if !defined(CONFIG_ARCH_MPC832X)
printf(" I2C2: %-4s MHz\n",
strmhz(buf, gd->arch.i2c2_clk));
#endif
#if defined(CONFIG_FSL_ESDHC)
printf(" SDHC: %-4s MHz\n",
strmhz(buf, gd->arch.sdhc_clk));
#endif
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC834X) || defined(CONFIG_ARCH_MPC837X)
printf(" TSEC1: %-4s MHz\n",
strmhz(buf, gd->arch.tsec1_clk));
printf(" TSEC2: %-4s MHz\n",
strmhz(buf, gd->arch.tsec2_clk));
printf(" USB DR: %-4s MHz\n",
strmhz(buf, gd->arch.usbdr_clk));
#elif defined(CONFIG_ARCH_MPC8309)
printf(" USB DR: %-4s MHz\n",
strmhz(buf, gd->arch.usbdr_clk));
#endif
#if defined(CONFIG_ARCH_MPC834X)
printf(" USB MPH: %-4s MHz\n",
strmhz(buf, gd->arch.usbmph_clk));
#endif
#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X) || \
defined(CONFIG_ARCH_MPC837X)
printf(" PCIEXP1: %-4s MHz\n",
strmhz(buf, gd->arch.pciexp1_clk));
printf(" PCIEXP2: %-4s MHz\n",
strmhz(buf, gd->arch.pciexp2_clk));
#endif
#if defined(CONFIG_ARCH_MPC837X)
printf(" SATA: %-4s MHz\n",
strmhz(buf, gd->arch.sata_clk));
#endif
return 0;
}
U_BOOT_CMD(clocks, 1, 0, do_clocks,
"print clock configuration",
" clocks"
);
#endif
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