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authorFurquan Shaikh <furquan@chromium.org>2017-04-04 11:47:19 -0700
committerFurquan Shaikh <furquan@google.com>2017-04-05 20:33:04 +0200
commit340908aecf01093d35aaf0b71c55ed65c3ebbeac (patch)
tree7d011dfbcc88e75c615b040a491ee1a979df844c /src
parentdd63f5978e44cdbf71047beb2e2b85c524ff3614 (diff)
downloadcoreboot-340908aecf01093d35aaf0b71c55ed65c3ebbeac.tar.xz
soc/intel/lpss: Provide common LPSS clock config
Since there are multiple controllers in the LPSS and all use the same frequency, provide a single Kconfig option for LPSS_CLOCK_MHZ. BUG=b:35583330 Change-Id: I3c0cb62d56916e6e5f671fb5f40210f4cb33316f Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/19115 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src')
-rw-r--r--src/soc/intel/apollolake/Kconfig3
-rw-r--r--src/soc/intel/common/Kconfig15
-rw-r--r--src/soc/intel/common/lpss_i2c.c2
-rw-r--r--src/soc/intel/common/lpss_i2c.h2
-rw-r--r--src/soc/intel/skylake/Kconfig8
5 files changed, 14 insertions, 16 deletions
diff --git a/src/soc/intel/apollolake/Kconfig b/src/soc/intel/apollolake/Kconfig
index ca8f5d0829..70d2099605 100644
--- a/src/soc/intel/apollolake/Kconfig
+++ b/src/soc/intel/apollolake/Kconfig
@@ -117,8 +117,7 @@ config CPU_ADDR_BITS
int
default 36
-config SOC_INTEL_COMMON_LPSS_I2C_CLOCK_MHZ
- depends on SOC_INTEL_COMMON_LPSS_I2C
+config SOC_INTEL_COMMON_LPSS_CLOCK_MHZ
int
default 133
diff --git a/src/soc/intel/common/Kconfig b/src/soc/intel/common/Kconfig
index 3d2ced95d6..919cb50406 100644
--- a/src/soc/intel/common/Kconfig
+++ b/src/soc/intel/common/Kconfig
@@ -67,6 +67,13 @@ config ACPI_CONSOLE
help
Provide a mechanism for serial console based ACPI debug.
+config SOC_INTEL_COMMON_LPSS_CLOCK_MHZ
+ int
+ help
+ The clock speed that the controllers in LPSS(GSPI, I2C) are running
+ at, in MHz. No default is set here as this is an SOC-specific value
+ and must be provided by the SOC.
+
config SOC_INTEL_COMMON_LPSS_I2C
bool
default n
@@ -74,14 +81,6 @@ config SOC_INTEL_COMMON_LPSS_I2C
This driver supports the Intel Low Power Subsystem (LPSS) I2C
controllers that are based on Synopsys DesignWare IP.
-config SOC_INTEL_COMMON_LPSS_I2C_CLOCK_MHZ
- int
- depends on SOC_INTEL_COMMON_LPSS_I2C
- help
- The clock speed that the I2C controller is running at, in MHz.
- No default is set here as this is an SOC-specific value and must
- be provided by the SOC when it selects this driver.
-
config SOC_INTEL_COMMON_LPSS_I2C_DEBUG
bool "Enable debug output for LPSS I2C transactions"
default n
diff --git a/src/soc/intel/common/lpss_i2c.c b/src/soc/intel/common/lpss_i2c.c
index 19fda4c703..b61c24afd7 100644
--- a/src/soc/intel/common/lpss_i2c.c
+++ b/src/soc/intel/common/lpss_i2c.c
@@ -611,7 +611,7 @@ static int lpss_i2c_gen_speed_config(struct lpss_i2c_regs *regs,
const struct lpss_i2c_bus_config *bcfg,
struct lpss_i2c_speed_config *config)
{
- const int ic_clk = CONFIG_SOC_INTEL_COMMON_LPSS_I2C_CLOCK_MHZ;
+ const int ic_clk = CONFIG_SOC_INTEL_COMMON_LPSS_CLOCK_MHZ;
uint16_t hcnt_min, lcnt_min;
int i;
diff --git a/src/soc/intel/common/lpss_i2c.h b/src/soc/intel/common/lpss_i2c.h
index b9517701f6..b46e657fd6 100644
--- a/src/soc/intel/common/lpss_i2c.h
+++ b/src/soc/intel/common/lpss_i2c.h
@@ -21,7 +21,7 @@
/*
* Timing values are in units of clock period, with the clock speed
- * provided by the SOC in CONFIG_SOC_INTEL_COMMON_LPSS_I2C_CLOCK_MHZ.
+ * provided by the SOC in CONFIG_SOC_INTEL_COMMON_LPSS_CLOCK_MHZ.
* Automatic configuration is done based on requested speed, but the
* values may need tuned depending on the board and the number of
* devices present on the bus.
diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index 8ac7263c89..df8ae2bd2d 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -109,10 +109,6 @@ config CPU_ADDR_BITS
int
default 36
-config SOC_INTEL_COMMON_LPSS_I2C_CLOCK_MHZ
- int
- default 120
-
config DCACHE_RAM_BASE
hex "Base address of cache-as-RAM"
default 0xfef00000
@@ -300,4 +296,8 @@ config NO_FADT_8042
help
Choose this option if you want to disable 8042 Keyboard
+config SOC_INTEL_COMMON_LPSS_CLOCK_MHZ
+ int
+ default 120
+
endif