Merge tag 'u-boot-stm32-20190712' of https://gitlab.denx.de/u-boot/custodians/u-boot-stm

- syscon: add support for power off
- stm32mp1: add op-tee config
- stm32mp1: add specific commands: stboard and stm32key
- add stm32 mailbox driver
- solve many stm32 warnings when building with W=1
- update stm32 gpio driver

1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/i2c/stm32f7_i2c.c b/drivers/i2c/stm32f7_i2c.c
index 50c4fd0de2..2b18735fea 100644
--- a/drivers/i2c/stm32f7_i2c.c
+++ b/drivers/i2c/stm32f7_i2c.c
@@ -519,13 +519,13 @@ static int stm32_i2c_compute_solutions(struct stm32_i2c_setup *setup,
 	/* Compute possible values for PRESC, SCLDEL and SDADEL */
 	for (p = 0; p < STM32_PRESC_MAX; p++) {
 		for (l = 0; l < STM32_SCLDEL_MAX; l++) {
-			u32 scldel = (l + 1) * (p + 1) * i2cclk;
+			int scldel = (l + 1) * (p + 1) * i2cclk;
 
 			if (scldel < scldel_min)
 				continue;
 
 			for (a = 0; a < STM32_SDADEL_MAX; a++) {
-				u32 sdadel = (a * (p + 1) + 1) * i2cclk;
+				int sdadel = (a * (p + 1) + 1) * i2cclk;
 
 				if (((sdadel >= sdadel_min) &&
 				     (sdadel <= sdadel_max)) &&
@@ -613,10 +613,12 @@ static int stm32_i2c_choose_solution(struct stm32_i2c_setup *setup,
 				if ((tscl >= clk_min) && (tscl <= clk_max) &&
 				    (tscl_h >= i2c_specs[setup->speed].h_min) &&
 				    (i2cclk < tscl_h)) {
-					int clk_error = tscl - i2cbus;
+					u32 clk_error;
 
-					if (clk_error < 0)
-						clk_error = -clk_error;
+					if (tscl > i2cbus)
+						clk_error = tscl - i2cbus;
+					else
+						clk_error = i2cbus - tscl;
 
 					if (clk_error < clk_error_prev) {
 						clk_error_prev = clk_error;