[S] Change in coreboot[master]: drivers/i2c/designware: Add 100 MHz controller base clock

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/69304 )

Change subject: drivers/i2c/designware: Add 100 MHz controller base clock
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drivers/i2c/designware: Add 100 MHz controller base clock

There are SoCs (for instance Intel Elkhart Lake) that do use 100 MHz as
the base clock for I2C controllers. To support them properly add a
frequency setting for 100 MHz to the designware I2C controller driver.

Change-Id: I9ea11c6a41fd3758b771a416251e108cbe722769
Signed-off-by: Werner Zeh 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69304
Tested-by: build bot (Jenkins) 
Reviewed-by: Mario Scheithauer 
---
M src/drivers/i2c/designware/dw_i2c.c
1 file changed, 24 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Mario Scheithauer: Looks good to me, approved

diff --git a/src/drivers/i2c/designware/dw_i2c.c b/src/drivers/i2c/designware/dw_i2c.c
index ecd9e88..1e3163a 100644
--- a/src/drivers/i2c/designware/dw_i2c.c
+++ b/src/drivers/i2c/designware/dw_i2c.c
@@ -196,6 +196,13 @@
    struct freq freq;
 } soc_clocks[] = {
    {
+		.clk_speed_mhz = 100,
+		.freq = {
+			.ticks = 100,
+			.ns = 1000,
+		},
+	},
+	{
    	.clk_speed_mhz = 120,
    	.freq = {
    		.ticks = 120,