Hi Lukasz,
Subject: Re: [PATCH] i2c: mxc: add CONFIG_CLK support
On Tue, 6 Aug 2019 10:09:12 +0000 Peng Fan peng.fan@nxp.com wrote:
When CONFIG_CLK enabled, use CLK UCLASS for clk related settings.
Signed-off-by: Peng Fan peng.fan@nxp.com
arch/arm/include/asm/mach-imx/mxc_i2c.h | 6 ++++++ drivers/i2c/mxc_i2c.c | 17 +++++++++++++++++ 2 files changed, 23 insertions(+)
diff --git a/arch/arm/include/asm/mach-imx/mxc_i2c.h b/arch/arm/include/asm/mach-imx/mxc_i2c.h index 8e1ea9af19..81fd981444 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 @@ struct mxc_i2c_bus { 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 23119cce65..2e157bca58 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -890,9 +890,22 @@ static int mxc_i2c_probe(struct udevice *bus) 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 @@ -919,7 +932,11 @@ static int mxc_i2c_probe(struct udevice *bus) ret = i2c_idle_bus(i2c_bus); if (ret < 0) { /* Disable clk */ +#if CONFIG_IS_ENABLED(CLK)
clk_disable(&i2c_bus->per_clk);+#else enable_i2c_clk(0, bus->seq); +#endif return ret; }
Reviewed-by: Lukasz Majewski lukma@denx.de
There is a v2 patch to fix an issue. Please help review there.
Thanks, Peng.
Best regards,
Lukasz Majewski
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