[PATCH] misc: scu: Remove child dev bind

[PATCH] misc: scu: Remove child dev bind

[Ye Li]

Remove the child device binding codes for clk and iomux nodes, because
the misc uclass has added such operation in post-bind. If we keep the
codes in scu bind, child devices will be created twices. Find the
problem by "dm uclass" command.

uclass 24: clk
0   * clk @ fce22380, seq 0, (req -1)
1     clk @ fce23110

uclass 67: pinctrl
0   * iomuxc @ fce22470, seq 0, (req -1)
1     iomuxc @ fce231c0

After the fix:

uclass 24: clk
0   * clk @ fce22380, seq 0, (req -1)

uclass 67: pinctrl
0   * iomuxc @ fce22470, seq 0, (req -1)

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/misc/imx8/scu.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/drivers/misc/imx8/scu.c b/drivers/misc/imx8/scu.c
index ee635eb..cdf3052 100644
--- a/drivers/misc/imx8/scu.c
+++ b/drivers/misc/imx8/scu.c
@@ -212,18 +212,6 @@ static int imx8_scu_remove(struct udevice *dev)
 
 static int imx8_scu_bind(struct udevice *dev)
 {
-	int ret;
-	struct udevice *child;
-	ofnode node;
-
-	debug("%s(dev=%p)\n", __func__, dev);
-	ofnode_for_each_subnode(node, dev_ofnode(dev)) {
-		ret = lists_bind_fdt(dev, node, &child, true);
-		if (ret)
-			return ret;
-		debug("bind child dev %s\n", child->name);
-	}
-
 	return 0;
 }
 
-- 
2.7.4

[PATCH] i2c: imx_lpi2c: Improve the codes to use private data

[Ye Li]

Current driver calls the devfdt_get_addr to get the base address
of lpi2c controller in each sub-functions. Since the devfdt_get_addr
accesses the DTB and translate the address, it introduces much
overhead.
Improve the codes to use private variable which has recorded the
base address from probe.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/i2c/imx_lpi2c.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/i2c/imx_lpi2c.c b/drivers/i2c/imx_lpi2c.c
index c8e42e0..b7b2aaf 100644
--- a/drivers/i2c/imx_lpi2c.c
+++ b/drivers/i2c/imx_lpi2c.c
@@ -97,7 +97,8 @@ static int bus_i2c_wait_for_tx_ready(struct imx_lpi2c_reg *regs)
 
 static int bus_i2c_send(struct udevice *bus, u8 *txbuf, int len)
 {
-	struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)devfdt_get_addr(bus);
+	struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus);
+	struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base);
 	lpi2c_status_t result = LPI2C_SUCESS;
 
 	/* empty tx */
@@ -118,7 +119,8 @@ static int bus_i2c_send(struct udevice *bus, u8 *txbuf, int len)
 
 static int bus_i2c_receive(struct udevice *bus, u8 *rxbuf, int len)
 {
-	struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)devfdt_get_addr(bus);
+	struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus);
+	struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base);
 	lpi2c_status_t result = LPI2C_SUCESS;
 	u32 val;
 	ulong start_time = get_timer(0);
@@ -162,8 +164,8 @@ static int bus_i2c_receive(struct udevice *bus, u8 *rxbuf, int len)
 static int bus_i2c_start(struct udevice *bus, u8 addr, u8 dir)
 {
 	lpi2c_status_t result;
-	struct imx_lpi2c_reg *regs =
-		(struct imx_lpi2c_reg *)devfdt_get_addr(bus);
+	struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus);
+	struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base);
 	u32 val;
 
 	result = imx_lpci2c_check_busy_bus(regs);
@@ -199,8 +201,8 @@ static int bus_i2c_start(struct udevice *bus, u8 addr, u8 dir)
 static int bus_i2c_stop(struct udevice *bus)
 {
 	lpi2c_status_t result;
-	struct imx_lpi2c_reg *regs =
-		(struct imx_lpi2c_reg *)devfdt_get_addr(bus);
+	struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus);
+	struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base);
 	u32 status;
 	ulong start_time;
 
@@ -271,7 +273,7 @@ u32 __weak imx_get_i2cclk(u32 i2c_num)
 static int bus_i2c_set_bus_speed(struct udevice *bus, int speed)
 {
 	struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus);
-	struct imx_lpi2c_reg *regs;
+	struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base);
 	u32 val;
 	u32 preescale = 0, best_pre = 0, clkhi = 0;
 	u32 best_clkhi = 0, abs_error = 0, rate;
@@ -280,8 +282,6 @@ static int bus_i2c_set_bus_speed(struct udevice *bus, int speed)
 	bool mode;
 	int i;
 
-	regs = (struct imx_lpi2c_reg *)devfdt_get_addr(bus);
-
 	if (IS_ENABLED(CONFIG_CLK)) {
 		clock_rate = clk_get_rate(&i2c_bus->per_clk);
 		if (clock_rate <= 0) {
@@ -348,11 +348,11 @@ static int bus_i2c_set_bus_speed(struct udevice *bus, int speed)
 
 static int bus_i2c_init(struct udevice *bus, int speed)
 {
-	struct imx_lpi2c_reg *regs;
 	u32 val;
 	int ret;
 
-	regs = (struct imx_lpi2c_reg *)devfdt_get_addr(bus);
+	struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus);
+	struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base);
 	/* reset peripheral */
 	writel(LPI2C_MCR_RST_MASK, &regs->mcr);
 	writel(0x0, &regs->mcr);
-- 
2.7.4

[PATCH] gpio: mxc_gpio: Improve to use ofdata_to_platdata

[Ye Li]

Current mxc_gpio DM driver allocates the platdata in bind function to
handle both OF_CONTROL enabled case and disabled case. This implementation
puts the devfdt_get_addr in bind, which introduces much overhead especially
in board_f phase.

Change the driver to a common way for handling the cases by using
ofdata_to_platdata and using DM framework to allocate platdata.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/gpio/mxc_gpio.c | 36 +++++++++---------------------------
 1 file changed, 9 insertions(+), 27 deletions(-)

diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index c924e52..a851893 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -292,46 +292,26 @@ static int mxc_gpio_probe(struct udevice *dev)
 	return 0;
 }
 
-static int mxc_gpio_bind(struct udevice *dev)
+static int mxc_gpio_ofdata_to_platdata(struct udevice *dev)
 {
-	struct mxc_gpio_plat *plat = dev->platdata;
 	fdt_addr_t addr;
-
-	/*
-	 * If platdata already exsits, directly return.
-	 * Actually only when DT is not supported, platdata
-	 * is statically initialized in U_BOOT_DEVICES.Here
-	 * will return.
-	 */
-	if (plat)
-		return 0;
+	struct mxc_gpio_plat *plat = dev_get_platdata(dev);
 
 	addr = devfdt_get_addr(dev);
 	if (addr == FDT_ADDR_T_NONE)
 		return -EINVAL;
 
-	/*
-	 * TODO:
-	 * When every board is converted to driver model and DT is supported,
-	 * this can be done by auto-alloc feature, but not using calloc
-	 * to alloc memory for platdata.
-	 *
-	 * For example mxc_plat below uses platform data rather than device
-	 * tree.
-	 *
-	 * NOTE: DO NOT COPY this code if you are using device tree.
-	 */
-	plat = calloc(1, sizeof(*plat));
-	if (!plat)
-		return -ENOMEM;
-
 	plat->regs = (struct gpio_regs *)addr;
 	plat->bank_index = dev->req_seq;
-	dev->platdata = plat;
 
 	return 0;
 }
 
+static int mxc_gpio_bind(struct udevice *dev)
+{
+	return 0;
+}
+
 static const struct udevice_id mxc_gpio_ids[] = {
 	{ .compatible = "fsl,imx35-gpio" },
 	{ }
@@ -342,6 +322,8 @@ U_BOOT_DRIVER(gpio_mxc) = {
 	.id	= UCLASS_GPIO,
 	.ops	= &gpio_mxc_ops,
 	.probe	= mxc_gpio_probe,
+	.ofdata_to_platdata = mxc_gpio_ofdata_to_platdata,
+	.platdata_auto_alloc_size = sizeof(struct mxc_gpio_plat),
 	.priv_auto_alloc_size = sizeof(struct mxc_bank_info),
 	.of_match = mxc_gpio_ids,
 	.bind	= mxc_gpio_bind,
-- 
2.7.4

[PATCH] i2c: imx_lpi2c: Improve the codes to use private data

[Heiko Schocher]

Hello Ye Li,

Am 10.06.2020 um 05:29 schrieb Ye Li:
> Current driver calls the devfdt_get_addr to get the base address
> of lpi2c controller in each sub-functions. Since the devfdt_get_addr
> accesses the DTB and translate the address, it introduces much
> overhead.
> Improve the codes to use private variable which has recorded the
> base address from probe.
> 
> Signed-off-by: Ye Li <ye.li@nxp.com>
> Reviewed-by: Peng Fan <peng.fan@nxp.com>
> ---
>   drivers/i2c/imx_lpi2c.c | 22 +++++++++++-----------
>   1 file changed, 11 insertions(+), 11 deletions(-)

Applied to u-boot-i2c.git master

Thanks!

bye,
Heiko

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-52   Fax: +49-8142-66989-80   Email: hs at denx.de

[PATCH] gpio: mxc_gpio: Improve to use ofdata_to_platdata

[sbabic at denx.de]

> Current mxc_gpio DM driver allocates the platdata in bind function to
> handle both OF_CONTROL enabled case and disabled case. This implementation
> puts the devfdt_get_addr in bind, which introduces much overhead especially
> in board_f phase.
> Change the driver to a common way for handling the cases by using
> ofdata_to_platdata and using DM framework to allocate platdata.
> Signed-off-by: Ye Li <ye.li@nxp.com>
> Reviewed-by: Peng Fan <peng.fan@nxp.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================