From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukasz Majewski Date: Wed, 10 Jul 2019 10:03:11 +0200 Subject: [U-Boot] [PATCH V2 04/51] i2c: mxc: add CONFIG_CLK support In-Reply-To: <20190708015333.20411-5-peng.fan@nxp.com> References: <20190708015333.20411-1-peng.fan@nxp.com> <20190708015333.20411-5-peng.fan@nxp.com> Message-ID: <20190710100311.6c7cc171@jawa> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Peng, > When CONFIG_CLK enabled, use CLK UCLASS for clk related settings. > > Signed-off-by: Peng Fan > --- > 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 > #include > +#if CONFIG_IS_ENABLED(CLK) > +#include > +#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); I'm wondering if all supported in U-Boot NXP SoCs have the per clk defined in index 0 with their DTS ... > + 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; > } > Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma at denx.de -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 488 bytes Desc: OpenPGP digital signature URL: