From: Simon Glass <sjg@chromium.org>
Date: Thu, 6 Feb 2020 16:54:55 +0000 (-0700)
Subject: x86: apl: Drop the I2C config in FSP-S
X-Git-Tag: v2020.04-rc2~4^2~10
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=eb8af95fc586a769538ff3b613e57aff9a51731e;p=oweals%2Fu-boot.git

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

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>
---

diff --git a/arch/x86/cpu/apollolake/fsp_s.c b/arch/x86/cpu/apollolake/fsp_s.c
index 9804227f80..f8fa4dec8f 100644
--- a/arch/x86/cpu/apollolake/fsp_s.c
+++ b/arch/x86/cpu/apollolake/fsp_s.c
@@ -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 {