GitHub-Mirror/u-boot
2
0
Fork 0
mirror of https://github.com/Fishwaldo/u-boot.git synced 2025-03-18 21:21:37 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

x86: apl: Drop the I2C config in FSP-S

Browse source 
This config is not actually used here and in U-Boot it seems better to set
this using the device tree for each individual controller. The monolithic
config of the FSP-S is only necessary if the FSP is actually configuring
something, but here it is not.

The FSP-S does enable/disable the various I2C ports. It might be nice to
handle this using the okay/disabled property of each port, but that can be
considered later.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-02-06 09:54:55 -07:00 • committed by Bin Meng
parent 659252e7de
commit eb8af95fc5
1 changed files with 0 additions and 58 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

58
arch/x86/cpu/apollolake/fsp_s.c
View file

@ -24,7 +24,6 @@
#define HIDE_BIT BIT(0)
#define INTEL_GSPI_MAX 3
#define INTEL_I2C_DEV_MAX 8
#define MAX_USB2_PORTS 8
enum {
@ -32,36 +31,6 @@ enum {
CHIPSET_LOCKDOWN_COREBOOT, /* coreboot handles locking */
};
enum i2c_speed {
I2C_SPEED_STANDARD = 100000,
I2C_SPEED_FAST = 400000,
I2C_SPEED_FAST_PLUS = 1000000,
I2C_SPEED_HIGH = 3400000,
I2C_SPEED_FAST_ULTRA = 5000000,
};
/*
* Timing values are in units of clock period, with the clock speed
* provided by the SOC
*
* TODO(sjg@chromium.org): Connect this up to the I2C driver
*/
struct dw_i2c_speed_config {
enum i2c_speed speed;
/* SCL high and low period count */
u16 scl_lcnt;
u16 scl_hcnt;
/*
* SDA hold time should be 300ns in standard and fast modes
* and long enough for deterministic logic level change in
* fast-plus and high speed modes.
*
* [15:0] SDA TX Hold Time
* [23:16] SDA RX Hold Time
*/
u32 sda_hold;
};
/* Serial IRQ control. SERIRQ_QUIET is the default (0) */
enum serirq_mode {
SERIRQ_QUIET,
@ -69,32 +38,6 @@ enum serirq_mode {
SERIRQ_OFF,
};
/*
* This I2C controller has support for 3 independent speed configs but can
* support both FAST_PLUS and HIGH speeds through the same set of speed
* config registers. These are treated separately so the speed config values
* can be provided via ACPI to the OS.
*/
#define DW_I2C_SPEED_CONFIG_COUNT 4
struct dw_i2c_bus_config {
/* Bus should be enabled in TPL with temporary base */
int early_init;
/* Bus speed in Hz, default is I2C_SPEED_FAST (400 KHz) */
enum i2c_speed speed;
/*
* If rise_time_ns is non-zero the calculations for lcnt and hcnt
* registers take into account the times of the bus. However, if
* there is a match in speed_config those register values take
* precedence
*/
int rise_time_ns;
int fall_time_ns;
int data_hold_time_ns;
/* Specific bus speed configuration */
struct dw_i2c_speed_config speed_config[DW_I2C_SPEED_CONFIG_COUNT];
};
struct gspi_cfg {
/* Bus speed in MHz */
u32 speed_mhz;
@ -110,7 +53,6 @@ struct gspi_cfg {
struct soc_intel_common_config {
int chipset_lockdown;
struct gspi_cfg gspi[INTEL_GSPI_MAX];
struct dw_i2c_bus_config i2c[INTEL_I2C_DEV_MAX];
};
enum pnp_settings {