Merge tag 'for-v2019.10-v2' of https://gitlab.denx.de/u-boot/custodians/u-boot-i2c
i2c bugfixes for 2019.10 take 2
- i2c: mxc: add CONFIG_CLK support
If CONFIG_CLK is enabled use clk framework for clock settings.
diff --git a/arch/arm/include/asm/mach-imx/mxc_i2c.h b/arch/arm/include/asm/mach-imx/mxc_i2c.h
index 8e1ea9a..81fd981 100644
--- a/arch/arm/include/asm/mach-imx/mxc_i2c.h
+++ b/arch/arm/include/asm/mach-imx/mxc_i2c.h
@@ -6,6 +6,9 @@
#define __ASM_ARCH_MXC_MXC_I2C_H__
#include <asm-generic/gpio.h>
#include <asm/mach-imx/iomux-v3.h>
+#if CONFIG_IS_ENABLED(CLK)
+#include <clk.h>
+#endif
struct i2c_pin_ctrl {
iomux_v3_cfg_t i2c_mode;
@@ -47,6 +50,9 @@
ulong driver_data;
int speed;
struct i2c_pads_info *pads_info;
+#if CONFIG_IS_ENABLED(CLK)
+ struct clk per_clk;
+#endif
#ifndef CONFIG_DM_I2C
int (*idle_bus_fn)(void *p);
void *idle_bus_data;
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c
index 20f6dc4..786b5a2 100644
--- a/drivers/i2c/mxc_i2c.c
+++ b/drivers/i2c/mxc_i2c.c
@@ -149,7 +149,12 @@
#endif
/* Divider value calculation */
+#if CONFIG_IS_ENABLED(CLK)
+ i2c_clk_rate = clk_get_rate(&i2c_bus->per_clk);
+#else
i2c_clk_rate = mxc_get_clock(MXC_I2C_CLK);
+#endif
+
div = (i2c_clk_rate + rate - 1) / rate;
if (div < i2c_clk_div[0][0])
clk_div = 0;
@@ -891,9 +896,22 @@
i2c_bus->bus = bus;
/* Enable clk */
+#if CONFIG_IS_ENABLED(CLK)
+ ret = clk_get_by_index(bus, 0, &i2c_bus->per_clk);
+ if (ret) {
+ printf("Failed to get i2c clk\n");
+ return ret;
+ }
+ ret = clk_enable(&i2c_bus->per_clk);
+ if (ret) {
+ printf("Failed to enable i2c clk\n");
+ return ret;
+ }
+#else
ret = enable_i2c_clk(1, bus->seq);
if (ret < 0)
return ret;
+#endif
/*
* See Documentation/devicetree/bindings/i2c/i2c-imx.txt