Commit 49493cb7 authored by Tom Warren's avatar Tom Warren

Tegra: Split tegra_get_chip_type() into soc & sku funcs

As suggested by Stephen Warren, use tegra_get_chip() to return
the pure CHIPID for a Tegra SoC (i.e. 0x20 for Tegra20, 0x30 for
Tegra30, etc.) and rename tegra_get_chip_type() to reflect its true
function, i.e. tegra_get_chip_sku(), which returns an ID like
TEGRA_SOC_T25, TEGRA_SOC_T33, etc.
Signed-off-by: default avatarTom Warren <twarren@nvidia.com>
Reviewed-by: default avatarStephen Warren <swarren@nvidia.com>
parent d94c2dbd
......@@ -143,26 +143,34 @@ void init_pllx(void)
{
struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
struct clk_pll_simple *pll = &clkrst->crc_pll_simple[SIMPLE_PLLX];
int chip_type;
int soc_type, sku_info, chip_sku;
enum clock_osc_freq osc;
struct clk_pll_table *sel;
debug("init_pllx entry\n");
/* get chip type */
chip_type = tegra_get_chip_type();
debug(" init_pllx: chip_type = %d\n", chip_type);
/* get SOC (chip) type */
soc_type = tegra_get_chip();
debug(" init_pllx: SoC = 0x%02X\n", soc_type);
/* get SKU info */
sku_info = tegra_get_sku_info();
debug(" init_pllx: SKU info byte = 0x%02X\n", sku_info);
/* get chip SKU, combo of the above info */
chip_sku = tegra_get_chip_sku();
debug(" init_pllx: Chip SKU = %d\n", chip_sku);
/* get osc freq */
osc = clock_get_osc_freq();
debug(" init_pllx: osc = %d\n", osc);
debug(" init_pllx: osc = %d\n", osc);
/* set pllx */
sel = &tegra_pll_x_table[chip_type][osc];
sel = &tegra_pll_x_table[chip_sku][osc];
pllx_set_rate(pll, sel->n, sel->m, sel->p, sel->cpcon);
/* adjust PLLP_out1-4 on T30/T114 */
if (chip_type == TEGRA_SOC_T30 || chip_type == TEGRA_SOC_T114) {
/* adjust PLLP_out1-4 on T3x/T114 */
if (soc_type >= CHIPID_TEGRA30) {
debug(" init_pllx: adjusting PLLP out freqs\n");
adjust_pllp_out_freqs();
}
......@@ -287,7 +295,7 @@ void reset_A9_cpu(int reset)
void clock_enable_coresight(int enable)
{
u32 rst, src = 2;
int chip;
int soc_type;
debug("clock_enable_coresight entry\n");
clock_set_enable(PERIPH_ID_CORESIGHT, enable);
......@@ -295,21 +303,21 @@ void clock_enable_coresight(int enable)
if (enable) {
/*
* Put CoreSight on PLLP_OUT0 (216 MHz) and divide it down by
* 1.5, giving an effective frequency of 144MHz.
* Set PLLP_OUT0 [bits31:30 = 00], and use a 7.1 divisor
* (bits 7:0), so 00000001b == 1.5 (n+1 + .5)
*
* Clock divider request for 204MHz would setup CSITE clock as
* 144MHz for PLLP base 216MHz and 204MHz for PLLP base 408MHz
* Put CoreSight on PLLP_OUT0 and divide it down as per
* PLLP base frequency based on SoC type (T20/T30/T114).
* Clock divider request would setup CSITE clock as 144MHz
* for PLLP base 216MHz and 204MHz for PLLP base 408MHz
*/
chip = tegra_get_chip_type();
if (chip == TEGRA_SOC_T30 || chip == TEGRA_SOC_T114)
soc_type = tegra_get_chip();
if (soc_type == CHIPID_TEGRA30 || soc_type == CHIPID_TEGRA114)
src = CLK_DIVIDER(NVBL_PLLP_KHZ, 204000);
else if (chip == TEGRA_SOC_T20 || chip == TEGRA_SOC_T25)
else if (soc_type == CHIPID_TEGRA20)
src = CLK_DIVIDER(NVBL_PLLP_KHZ, 144000);
else
printf("%s: Unknown chip type %X!\n", __func__, chip);
printf("%s: Unknown SoC type %X!\n",
__func__, soc_type);
clock_ll_set_source_divisor(PERIPH_ID_CSI, 0, src);
/* Unlock the CPU CoreSight interfaces */
......
......@@ -80,5 +80,7 @@ void init_pllx(void);
void powerup_cpu(void);
void reset_A9_cpu(int reset);
void start_cpu(u32 reset_vector);
int tegra_get_chip_type(void);
int tegra_get_chip(void);
int tegra_get_sku_info(void);
int tegra_get_chip_sku(void);
void adjust_pllp_out_freqs(void);
......@@ -34,25 +34,44 @@
#include <asm/arch-tegra/tegra.h>
#include <asm/arch-tegra/warmboot.h>
int tegra_get_chip_type(void)
int tegra_get_chip(void)
{
struct apb_misc_gp_ctlr *gp;
struct fuse_regs *fuse = (struct fuse_regs *)NV_PA_FUSE_BASE;
uint tegra_sku_id, rev;
int rev;
struct apb_misc_gp_ctlr *gp =
(struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
/*
* This is undocumented, Chip ID is bits 15:8 of the register
* APB_MISC + 0x804, and has value 0x20 for Tegra20, 0x30 for
* Tegra30, and 0x35 for T114.
*/
gp = (struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
rev = (readl(&gp->hidrev) & HIDREV_CHIPID_MASK) >> HIDREV_CHIPID_SHIFT;
debug("%s: CHIPID is 0x%02X\n", __func__, rev);
return rev;
}
int tegra_get_sku_info(void)
{
int sku_id;
struct fuse_regs *fuse = (struct fuse_regs *)NV_PA_FUSE_BASE;
sku_id = readl(&fuse->sku_info) & 0xff;
debug("%s: SKU info byte is 0x%02X\n", __func__, sku_id);
return sku_id;
}
int tegra_get_chip_sku(void)
{
uint sku_id, chip_id;
tegra_sku_id = readl(&fuse->sku_info) & 0xff;
chip_id = tegra_get_chip();
sku_id = tegra_get_sku_info();
switch (rev) {
switch (chip_id) {
case CHIPID_TEGRA20:
switch (tegra_sku_id) {
switch (sku_id) {
case SKU_ID_T20:
return TEGRA_SOC_T20;
case SKU_ID_T25SE:
......@@ -64,20 +83,22 @@ int tegra_get_chip_type(void)
}
break;
case CHIPID_TEGRA30:
switch (tegra_sku_id) {
switch (sku_id) {
case SKU_ID_T33:
case SKU_ID_T30:
return TEGRA_SOC_T30;
}
break;
case CHIPID_TEGRA114:
switch (tegra_sku_id) {
switch (sku_id) {
case SKU_ID_T114_ENG:
return TEGRA_SOC_T114;
}
break;
}
/* unknown sku id */
/* unknown chip/sku id */
printf("%s: ERROR: UNKNOWN CHIP/SKU ID COMBO (0x%02X/0x%02X)\n",
__func__, chip_id, sku_id);
return TEGRA_SOC_UNKNOWN;
}
......
......@@ -44,7 +44,7 @@ int pmu_set_nominal(void)
int core, cpu, bus;
/* by default, the table has been filled with T25 settings */
switch (tegra_get_chip_type()) {
switch (tegra_get_chip_sku()) {
case TEGRA_SOC_T20:
core = VDD_CORE_NOMINAL_T20;
cpu = VDD_CPU_NOMINAL_T20;
......@@ -54,7 +54,7 @@ int pmu_set_nominal(void)
cpu = VDD_CPU_NOMINAL_T25;
break;
default:
debug("%s: Unknown chip type\n", __func__);
debug("%s: Unknown SKU id\n", __func__);
return -1;
}
......
......@@ -59,9 +59,25 @@
extern void _start(void);
/**
* Works out the SOC type used for clocks settings
* Works out the SOC/SKU type used for clocks settings
*
* @return SOC type - see TEGRA_SOC...
*/
int tegra_get_chip_type(void);
int tegra_get_chip_sku(void);
/**
* Returns the pure SOC (chip ID) from the HIDREV register
*
* @return SOC ID - see CHIPID_TEGRAxx...
*/
int tegra_get_chip(void);
/**
* Returns the SKU ID from the sku_info register
*
* @return SKU ID - see SKU_ID_Txx...
*/
int tegra_get_sku_info(void);
/* Do any chip-specific cache config */
void config_cache(void);
......@@ -40,7 +40,7 @@ int board_emc_init(void)
{
unsigned rate;
switch (tegra_get_chip_type()) {
switch (tegra_get_chip_sku()) {
default:
case TEGRA_SOC_T20:
rate = EMC_SDRAM_RATE_T20;
......
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