[PATCH v3 0/3] clk: Add support for IDT 5P49V5935

[PATCH v3 0/3] clk: Add support for IDT 5P49V5935

[Alexey Firago]

This series adds support for IDT VersaClock 5P49V5935 programmable clock
generator to the existing clk-versaclock5 driver.

Patches were verified on Avnet UltraZed-EG board with IO Carrier Card.

Changes in V2:
- Introduce vc5_chip_info structure describing chip features
- Set vc5_chip_info for the supported chips using clk_vc5_of_match[].data
- Add 5P49V5935 support using vc5_chip_info approach
- Fix idx comparison in vc5_of_clk_get ('>' to '>=')

Changes in V3:
- Change type of clk_fod_cnt and clk_out_cnt to unsigned int
- Add missed 'const' to vc5_chip_info instance declaration
- Use of_device_get_match_data() to initialize vc5_chip_info on probe 

Alexey Firago (3):
  clk: vc5: Add structure to describe particular chip features
  clk: vc5: Add bindings for IDT VersaClock 5P49V5935
  clk: vc5: Add support for IDT VersaClock 5P49V5935

 .../devicetree/bindings/clock/idt,versaclock5.txt  | 16 ++++-
 drivers/clk/clk-versaclock5.c                      | 76 +++++++++++++++++-----
 2 files changed, 71 insertions(+), 21 deletions(-)

-- 
2.7.4

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[PATCH v3 0/3] clk: Add support for IDT 5P49V5935

[Alexey Firago]

This series adds support for IDT VersaClock 5P49V5935 programmable clock
generator to the existing clk-versaclock5 driver.

Patches were verified on Avnet UltraZed-EG board with IO Carrier Card.

Changes in V2:
- Introduce vc5_chip_info structure describing chip features
- Set vc5_chip_info for the supported chips using clk_vc5_of_match[].data
- Add 5P49V5935 support using vc5_chip_info approach
- Fix idx comparison in vc5_of_clk_get ('>' to '>=')

Changes in V3:
- Change type of clk_fod_cnt and clk_out_cnt to unsigned int
- Add missed 'const' to vc5_chip_info instance declaration
- Use of_device_get_match_data() to initialize vc5_chip_info on probe 

Alexey Firago (3):
  clk: vc5: Add structure to describe particular chip features
  clk: vc5: Add bindings for IDT VersaClock 5P49V5935
  clk: vc5: Add support for IDT VersaClock 5P49V5935

 .../devicetree/bindings/clock/idt,versaclock5.txt  | 16 ++++-
 drivers/clk/clk-versaclock5.c                      | 76 +++++++++++++++++-----
 2 files changed, 71 insertions(+), 21 deletions(-)

-- 
2.7.4

[PATCH v3 1/3] clk: vc5: Add structure to describe particular chip features

[Alexey Firago]

Introduce vc5_chip_info structure to describe features of a particular
VC5 chip (id, number of FODs, number of outputs, flags).
For now flags are only used to indicate if chip has internal XTAL.
vc5_chip_info is set on probe from the matched of_device_id->data.

Also add defines to specify maximum number of FODs and clock outputs
supported by the driver.

With these changes it should be easier to extend driver to support
more VC5 models.

Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
---
 drivers/clk/clk-versaclock5.c | 65 +++++++++++++++++++++++++++++++------------
 1 file changed, 47 insertions(+), 18 deletions(-)

diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
index 56741f3..4e81fb1 100644
--- a/drivers/clk/clk-versaclock5.c
+++ b/drivers/clk/clk-versaclock5.c
@@ -113,12 +113,30 @@
 #define VC5_MUX_IN_XIN		BIT(0)
 #define VC5_MUX_IN_CLKIN	BIT(1)
 
+/* Maximum number of clk_out supported by this driver */
+#define VC5_MAX_CLK_OUT_NUM	3
+
+/* Maximum number of FODs supported by this driver */
+#define VC5_MAX_FOD_NUM	2
+
+/* flags to describe chip features */
+/* chip has built-in oscilator */
+#define VC5_HAS_INTERNAL_XTAL	BIT(0)
+
 /* Supported IDT VC5 models. */
 enum vc5_model {
 	IDT_VC5_5P49V5923,
 	IDT_VC5_5P49V5933,
 };
 
+/* Structure to describe features of a particular VC5 model */
+struct vc5_chip_info {
+	const enum vc5_model	model;
+	const unsigned int	clk_fod_cnt;
+	const unsigned int	clk_out_cnt;
+	u32			flags;
+};
+
 struct vc5_driver_data;
 
 struct vc5_hw_data {
@@ -132,15 +150,15 @@ struct vc5_hw_data {
 struct vc5_driver_data {
 	struct i2c_client	*client;
 	struct regmap		*regmap;
-	enum vc5_model		model;
+	const struct vc5_chip_info	*chip_info;
 
 	struct clk		*pin_xin;
 	struct clk		*pin_clkin;
 	unsigned char		clk_mux_ins;
 	struct clk_hw		clk_mux;
 	struct vc5_hw_data	clk_pll;
-	struct vc5_hw_data	clk_fod[2];
-	struct vc5_hw_data	clk_out[3];
+	struct vc5_hw_data	clk_fod[VC5_MAX_FOD_NUM];
+	struct vc5_hw_data	clk_out[VC5_MAX_CLK_OUT_NUM];
 };
 
 static const char * const vc5_mux_names[] = {
@@ -563,7 +581,7 @@ static struct clk_hw *vc5_of_clk_get(struct of_phandle_args *clkspec,
 	struct vc5_driver_data *vc5 = data;
 	unsigned int idx = clkspec->args[0];
 
-	if (idx > 2)
+	if (idx >= vc5->chip_info->clk_out_cnt)
 		return ERR_PTR(-EINVAL);
 
 	return &vc5->clk_out[idx].hw;
@@ -586,12 +604,10 @@ static const struct of_device_id clk_vc5_of_match[];
 static int vc5_probe(struct i2c_client *client,
 		     const struct i2c_device_id *id)
 {
-	const struct of_device_id *of_id =
-		of_match_device(clk_vc5_of_match, &client->dev);
 	struct vc5_driver_data *vc5;
 	struct clk_init_data init;
 	const char *parent_names[2];
-	unsigned int n, idx;
+	unsigned int n, idx = 0;
 	int ret;
 
 	vc5 = devm_kzalloc(&client->dev, sizeof(*vc5), GFP_KERNEL);
@@ -600,7 +616,7 @@ static int vc5_probe(struct i2c_client *client,
 
 	i2c_set_clientdata(client, vc5);
 	vc5->client = client;
-	vc5->model = (enum vc5_model)of_id->data;
+	vc5->chip_info = of_device_get_match_data(&client->dev);
 
 	vc5->pin_xin = devm_clk_get(&client->dev, "xin");
 	if (PTR_ERR(vc5->pin_xin) == -EPROBE_DEFER)
@@ -622,8 +638,7 @@ static int vc5_probe(struct i2c_client *client,
 	if (!IS_ERR(vc5->pin_xin)) {
 		vc5->clk_mux_ins |= VC5_MUX_IN_XIN;
 		parent_names[init.num_parents++] = __clk_get_name(vc5->pin_xin);
-	} else if (vc5->model == IDT_VC5_5P49V5933) {
-		/* IDT VC5 5P49V5933 has built-in oscilator. */
+	} else if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL) {
 		vc5->pin_xin = clk_register_fixed_rate(&client->dev,
 						       "internal-xtal", NULL,
 						       0, 25000000);
@@ -672,8 +687,8 @@ static int vc5_probe(struct i2c_client *client,
 	}
 
 	/* Register FODs */
-	for (n = 0; n < 2; n++) {
-		idx = vc5_map_index_to_output(vc5->model, n);
+	for (n = 0; n < vc5->chip_info->clk_fod_cnt; n++) {
+		idx = vc5_map_index_to_output(vc5->chip_info->model, n);
 		memset(&init, 0, sizeof(init));
 		init.name = vc5_fod_names[idx];
 		init.ops = &vc5_fod_ops;
@@ -709,8 +724,8 @@ static int vc5_probe(struct i2c_client *client,
 	}
 
 	/* Register FOD-connected OUTx outputs */
-	for (n = 1; n < 3; n++) {
-		idx = vc5_map_index_to_output(vc5->model, n - 1);
+	for (n = 1; n < vc5->chip_info->clk_out_cnt; n++) {
+		idx = vc5_map_index_to_output(vc5->chip_info->model, n - 1);
 		parent_names[0] = vc5_fod_names[idx];
 		if (n == 1)
 			parent_names[1] = vc5_mux_names[0];
@@ -744,7 +759,7 @@ static int vc5_probe(struct i2c_client *client,
 	return 0;
 
 err_clk:
-	if (vc5->model == IDT_VC5_5P49V5933)
+	if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL)
 		clk_unregister_fixed_rate(vc5->pin_xin);
 	return ret;
 }
@@ -755,12 +770,26 @@ static int vc5_remove(struct i2c_client *client)
 
 	of_clk_del_provider(client->dev.of_node);
 
-	if (vc5->model == IDT_VC5_5P49V5933)
+	if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL)
 		clk_unregister_fixed_rate(vc5->pin_xin);
 
 	return 0;
 }
 
+static const struct vc5_chip_info idt_5p49v5923_info = {
+	.model = IDT_VC5_5P49V5923,
+	.clk_fod_cnt = 2,
+	.clk_out_cnt = 3,
+	.flags = 0,
+};
+
+static const struct vc5_chip_info idt_5p49v5933_info = {
+	.model = IDT_VC5_5P49V5933,
+	.clk_fod_cnt = 2,
+	.clk_out_cnt = 3,
+	.flags = VC5_HAS_INTERNAL_XTAL,
+};
+
 static const struct i2c_device_id vc5_id[] = {
 	{ "5p49v5923", .driver_data = IDT_VC5_5P49V5923 },
 	{ "5p49v5933", .driver_data = IDT_VC5_5P49V5933 },
@@ -769,8 +798,8 @@ static const struct i2c_device_id vc5_id[] = {
 MODULE_DEVICE_TABLE(i2c, vc5_id);
 
 static const struct of_device_id clk_vc5_of_match[] = {
-	{ .compatible = "idt,5p49v5923", .data = (void *)IDT_VC5_5P49V5923 },
-	{ .compatible = "idt,5p49v5933", .data = (void *)IDT_VC5_5P49V5933 },
+	{ .compatible = "idt,5p49v5923", .data = &idt_5p49v5923_info },
+	{ .compatible = "idt,5p49v5933", .data = &idt_5p49v5933_info },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, clk_vc5_of_match);
-- 
2.7.4

[PATCH v3 1/3] clk: vc5: Add structure to describe particular chip features

[Alexey Firago]

Introduce vc5_chip_info structure to describe features of a particular
VC5 chip (id, number of FODs, number of outputs, flags).
For now flags are only used to indicate if chip has internal XTAL.
vc5_chip_info is set on probe from the matched of_device_id->data.

Also add defines to specify maximum number of FODs and clock outputs
supported by the driver.

With these changes it should be easier to extend driver to support
more VC5 models.

Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
---
 drivers/clk/clk-versaclock5.c | 65 +++++++++++++++++++++++++++++++------------
 1 file changed, 47 insertions(+), 18 deletions(-)

diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
index 56741f3..4e81fb1 100644
--- a/drivers/clk/clk-versaclock5.c
+++ b/drivers/clk/clk-versaclock5.c
@@ -113,12 +113,30 @@
 #define VC5_MUX_IN_XIN		BIT(0)
 #define VC5_MUX_IN_CLKIN	BIT(1)
 
+/* Maximum number of clk_out supported by this driver */
+#define VC5_MAX_CLK_OUT_NUM	3
+
+/* Maximum number of FODs supported by this driver */
+#define VC5_MAX_FOD_NUM	2
+
+/* flags to describe chip features */
+/* chip has built-in oscilator */
+#define VC5_HAS_INTERNAL_XTAL	BIT(0)
+
 /* Supported IDT VC5 models. */
 enum vc5_model {
 	IDT_VC5_5P49V5923,
 	IDT_VC5_5P49V5933,
 };
 
+/* Structure to describe features of a particular VC5 model */
+struct vc5_chip_info {
+	const enum vc5_model	model;
+	const unsigned int	clk_fod_cnt;
+	const unsigned int	clk_out_cnt;
+	u32			flags;
+};
+
 struct vc5_driver_data;
 
 struct vc5_hw_data {
@@ -132,15 +150,15 @@ struct vc5_hw_data {
 struct vc5_driver_data {
 	struct i2c_client	*client;
 	struct regmap		*regmap;
-	enum vc5_model		model;
+	const struct vc5_chip_info	*chip_info;
 
 	struct clk		*pin_xin;
 	struct clk		*pin_clkin;
 	unsigned char		clk_mux_ins;
 	struct clk_hw		clk_mux;
 	struct vc5_hw_data	clk_pll;
-	struct vc5_hw_data	clk_fod[2];
-	struct vc5_hw_data	clk_out[3];
+	struct vc5_hw_data	clk_fod[VC5_MAX_FOD_NUM];
+	struct vc5_hw_data	clk_out[VC5_MAX_CLK_OUT_NUM];
 };
 
 static const char * const vc5_mux_names[] = {
@@ -563,7 +581,7 @@ static struct clk_hw *vc5_of_clk_get(struct of_phandle_args *clkspec,
 	struct vc5_driver_data *vc5 = data;
 	unsigned int idx = clkspec->args[0];
 
-	if (idx > 2)
+	if (idx >= vc5->chip_info->clk_out_cnt)
 		return ERR_PTR(-EINVAL);
 
 	return &vc5->clk_out[idx].hw;
@@ -586,12 +604,10 @@ static const struct of_device_id clk_vc5_of_match[];
 static int vc5_probe(struct i2c_client *client,
 		     const struct i2c_device_id *id)
 {
-	const struct of_device_id *of_id =
-		of_match_device(clk_vc5_of_match, &client->dev);
 	struct vc5_driver_data *vc5;
 	struct clk_init_data init;
 	const char *parent_names[2];
-	unsigned int n, idx;
+	unsigned int n, idx = 0;
 	int ret;
 
 	vc5 = devm_kzalloc(&client->dev, sizeof(*vc5), GFP_KERNEL);
@@ -600,7 +616,7 @@ static int vc5_probe(struct i2c_client *client,
 
 	i2c_set_clientdata(client, vc5);
 	vc5->client = client;
-	vc5->model = (enum vc5_model)of_id->data;
+	vc5->chip_info = of_device_get_match_data(&client->dev);
 
 	vc5->pin_xin = devm_clk_get(&client->dev, "xin");
 	if (PTR_ERR(vc5->pin_xin) == -EPROBE_DEFER)
@@ -622,8 +638,7 @@ static int vc5_probe(struct i2c_client *client,
 	if (!IS_ERR(vc5->pin_xin)) {
 		vc5->clk_mux_ins |= VC5_MUX_IN_XIN;
 		parent_names[init.num_parents++] = __clk_get_name(vc5->pin_xin);
-	} else if (vc5->model == IDT_VC5_5P49V5933) {
-		/* IDT VC5 5P49V5933 has built-in oscilator. */
+	} else if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL) {
 		vc5->pin_xin = clk_register_fixed_rate(&client->dev,
 						       "internal-xtal", NULL,
 						       0, 25000000);
@@ -672,8 +687,8 @@ static int vc5_probe(struct i2c_client *client,
 	}
 
 	/* Register FODs */
-	for (n = 0; n < 2; n++) {
-		idx = vc5_map_index_to_output(vc5->model, n);
+	for (n = 0; n < vc5->chip_info->clk_fod_cnt; n++) {
+		idx = vc5_map_index_to_output(vc5->chip_info->model, n);
 		memset(&init, 0, sizeof(init));
 		init.name = vc5_fod_names[idx];
 		init.ops = &vc5_fod_ops;
@@ -709,8 +724,8 @@ static int vc5_probe(struct i2c_client *client,
 	}
 
 	/* Register FOD-connected OUTx outputs */
-	for (n = 1; n < 3; n++) {
-		idx = vc5_map_index_to_output(vc5->model, n - 1);
+	for (n = 1; n < vc5->chip_info->clk_out_cnt; n++) {
+		idx = vc5_map_index_to_output(vc5->chip_info->model, n - 1);
 		parent_names[0] = vc5_fod_names[idx];
 		if (n == 1)
 			parent_names[1] = vc5_mux_names[0];
@@ -744,7 +759,7 @@ static int vc5_probe(struct i2c_client *client,
 	return 0;
 
 err_clk:
-	if (vc5->model == IDT_VC5_5P49V5933)
+	if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL)
 		clk_unregister_fixed_rate(vc5->pin_xin);
 	return ret;
 }
@@ -755,12 +770,26 @@ static int vc5_remove(struct i2c_client *client)
 
 	of_clk_del_provider(client->dev.of_node);
 
-	if (vc5->model == IDT_VC5_5P49V5933)
+	if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL)
 		clk_unregister_fixed_rate(vc5->pin_xin);
 
 	return 0;
 }
 
+static const struct vc5_chip_info idt_5p49v5923_info = {
+	.model = IDT_VC5_5P49V5923,
+	.clk_fod_cnt = 2,
+	.clk_out_cnt = 3,
+	.flags = 0,
+};
+
+static const struct vc5_chip_info idt_5p49v5933_info = {
+	.model = IDT_VC5_5P49V5933,
+	.clk_fod_cnt = 2,
+	.clk_out_cnt = 3,
+	.flags = VC5_HAS_INTERNAL_XTAL,
+};
+
 static const struct i2c_device_id vc5_id[] = {
 	{ "5p49v5923", .driver_data = IDT_VC5_5P49V5923 },
 	{ "5p49v5933", .driver_data = IDT_VC5_5P49V5933 },
@@ -769,8 +798,8 @@ static const struct i2c_device_id vc5_id[] = {
 MODULE_DEVICE_TABLE(i2c, vc5_id);
 
 static const struct of_device_id clk_vc5_of_match[] = {
-	{ .compatible = "idt,5p49v5923", .data = (void *)IDT_VC5_5P49V5923 },
-	{ .compatible = "idt,5p49v5933", .data = (void *)IDT_VC5_5P49V5933 },
+	{ .compatible = "idt,5p49v5923", .data = &idt_5p49v5923_info },
+	{ .compatible = "idt,5p49v5933", .data = &idt_5p49v5933_info },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, clk_vc5_of_match);
-- 
2.7.4

Re: [PATCH v3 1/3] clk: vc5: Add structure to describe particular chip features

[Marek Vasut]

On 04/06/2017 11:15 AM, Alexey Firago wrote:
> Introduce vc5_chip_info structure to describe features of a particular
> VC5 chip (id, number of FODs, number of outputs, flags).
> For now flags are only used to indicate if chip has internal XTAL.
> vc5_chip_info is set on probe from the matched of_device_id->data.
> 
> Also add defines to specify maximum number of FODs and clock outputs
> supported by the driver.
> 
> With these changes it should be easier to extend driver to support
> more VC5 models.
> 
> Signed-off-by: Alexey Firago <alexey_firago@mentor.com>

Reviewed-by: Marek Vasut <marek.vasut@gmail.com>

> ---
>  drivers/clk/clk-versaclock5.c | 65 +++++++++++++++++++++++++++++++------------
>  1 file changed, 47 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
> index 56741f3..4e81fb1 100644
> --- a/drivers/clk/clk-versaclock5.c
> +++ b/drivers/clk/clk-versaclock5.c
> @@ -113,12 +113,30 @@
>  #define VC5_MUX_IN_XIN		BIT(0)
>  #define VC5_MUX_IN_CLKIN	BIT(1)
>  
> +/* Maximum number of clk_out supported by this driver */
> +#define VC5_MAX_CLK_OUT_NUM	3
> +
> +/* Maximum number of FODs supported by this driver */
> +#define VC5_MAX_FOD_NUM	2
> +
> +/* flags to describe chip features */
> +/* chip has built-in oscilator */
> +#define VC5_HAS_INTERNAL_XTAL	BIT(0)
> +
>  /* Supported IDT VC5 models. */
>  enum vc5_model {
>  	IDT_VC5_5P49V5923,
>  	IDT_VC5_5P49V5933,
>  };
>  
> +/* Structure to describe features of a particular VC5 model */
> +struct vc5_chip_info {
> +	const enum vc5_model	model;
> +	const unsigned int	clk_fod_cnt;
> +	const unsigned int	clk_out_cnt;
> +	u32			flags;

Shouldn't this also be const ?

> +};

[...]

-- 
Best regards,
Marek Vasut

Re: [PATCH v3 1/3] clk: vc5: Add structure to describe particular chip features

[Alexey Firago]

On 06.04.2017 17:54, Marek Vasut wrote:
> On 04/06/2017 11:15 AM, Alexey Firago wrote:
>> Introduce vc5_chip_info structure to describe features of a particular
>> VC5 chip (id, number of FODs, number of outputs, flags).
>> For now flags are only used to indicate if chip has internal XTAL.
>> vc5_chip_info is set on probe from the matched of_device_id->data.
>>
>> Also add defines to specify maximum number of FODs and clock outputs
>> supported by the driver.
>>
>> With these changes it should be easier to extend driver to support
>> more VC5 models.
>>
>> Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
>
> Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
>
>> ---
>>  drivers/clk/clk-versaclock5.c | 65 +++++++++++++++++++++++++++++++------------
>>  1 file changed, 47 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
>> index 56741f3..4e81fb1 100644
>> --- a/drivers/clk/clk-versaclock5.c
>> +++ b/drivers/clk/clk-versaclock5.c
>> @@ -113,12 +113,30 @@
>>  #define VC5_MUX_IN_XIN		BIT(0)
>>  #define VC5_MUX_IN_CLKIN	BIT(1)
>>
>> +/* Maximum number of clk_out supported by this driver */
>> +#define VC5_MAX_CLK_OUT_NUM	3
>> +
>> +/* Maximum number of FODs supported by this driver */
>> +#define VC5_MAX_FOD_NUM	2
>> +
>> +/* flags to describe chip features */
>> +/* chip has built-in oscilator */
>> +#define VC5_HAS_INTERNAL_XTAL	BIT(0)
>> +
>>  /* Supported IDT VC5 models. */
>>  enum vc5_model {
>>  	IDT_VC5_5P49V5923,
>>  	IDT_VC5_5P49V5933,
>>  };
>>
>> +/* Structure to describe features of a particular VC5 model */
>> +struct vc5_chip_info {
>> +	const enum vc5_model	model;
>> +	const unsigned int	clk_fod_cnt;
>> +	const unsigned int	clk_out_cnt;
>> +	u32			flags;
>
> Shouldn't this also be const ?

It probably should, since we are not changing flags at runtime 
currently. Will resend.

Thanks,
Alexey

Re: [PATCH v3 1/3] clk: vc5: Add structure to describe particular chip features

[Alexey Firago]

On 06.04.2017 17:54, Marek Vasut wrote:
> On 04/06/2017 11:15 AM, Alexey Firago wrote:
>> Introduce vc5_chip_info structure to describe features of a particular
>> VC5 chip (id, number of FODs, number of outputs, flags).
>> For now flags are only used to indicate if chip has internal XTAL.
>> vc5_chip_info is set on probe from the matched of_device_id->data.
>>
>> Also add defines to specify maximum number of FODs and clock outputs
>> supported by the driver.
>>
>> With these changes it should be easier to extend driver to support
>> more VC5 models.
>>
>> Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
>
> Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
>
>> ---
>>  drivers/clk/clk-versaclock5.c | 65 +++++++++++++++++++++++++++++++------------
>>  1 file changed, 47 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
>> index 56741f3..4e81fb1 100644
>> --- a/drivers/clk/clk-versaclock5.c
>> +++ b/drivers/clk/clk-versaclock5.c
>> @@ -113,12 +113,30 @@
>>  #define VC5_MUX_IN_XIN		BIT(0)
>>  #define VC5_MUX_IN_CLKIN	BIT(1)
>>
>> +/* Maximum number of clk_out supported by this driver */
>> +#define VC5_MAX_CLK_OUT_NUM	3
>> +
>> +/* Maximum number of FODs supported by this driver */
>> +#define VC5_MAX_FOD_NUM	2
>> +
>> +/* flags to describe chip features */
>> +/* chip has built-in oscilator */
>> +#define VC5_HAS_INTERNAL_XTAL	BIT(0)
>> +
>>  /* Supported IDT VC5 models. */
>>  enum vc5_model {
>>  	IDT_VC5_5P49V5923,
>>  	IDT_VC5_5P49V5933,
>>  };
>>
>> +/* Structure to describe features of a particular VC5 model */
>> +struct vc5_chip_info {
>> +	const enum vc5_model	model;
>> +	const unsigned int	clk_fod_cnt;
>> +	const unsigned int	clk_out_cnt;
>> +	u32			flags;
>
> Shouldn't this also be const ?

It probably should, since we are not changing flags at runtime 
currently. Will resend.

Thanks,
Alexey

[PATCH v3 2/3] clk: vc5: Add bindings for IDT VersaClock 5P49V5935

[Alexey Firago]

IDT VersaClock 5 5P49V5935 has 4 clock outputs, 4 fractional dividers.
Input clock source can be taken from either integrated crystal or from
external reference clock.

Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
---
 .../devicetree/bindings/clock/idt,versaclock5.txt        | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/idt,versaclock5.txt b/Documentation/devicetree/bindings/clock/idt,versaclock5.txt
index 87e9c47..53d7e50 100644
--- a/Documentation/devicetree/bindings/clock/idt,versaclock5.txt
+++ b/Documentation/devicetree/bindings/clock/idt,versaclock5.txt
@@ -6,18 +6,21 @@ from 3 to 12 output clocks.
 ==I2C device node==
 
 Required properties:
-- compatible:	shall be one of "idt,5p49v5923" , "idt,5p49v5933".
+- compatible:	shall be one of "idt,5p49v5923" , "idt,5p49v5933" ,
+		"idt,5p49v5935".
 - reg:		i2c device address, shall be 0x68 or 0x6a.
 - #clock-cells:	from common clock binding; shall be set to 1.
 - clocks:	from common clock binding; list of parent clock handles,
 		- 5p49v5923: (required) either or both of XTAL or CLKIN
 					reference clock.
-		- 5p49v5933: (optional) property not present (internal
+		- 5p49v5933 and
+		- 5p49v5935: (optional) property not present (internal
 					Xtal used) or CLKIN reference
 					clock.
 - clock-names:	from common clock binding; clock input names, can be
 		- 5p49v5923: (required) either or both of "xin", "clkin".
-		- 5p49v5933: (optional) property not present or "clkin".
+		- 5p49v5933 and
+		- 5p49v5935: (optional) property not present or "clkin".
 
 ==Mapping between clock specifier and physical pins==
 
@@ -34,6 +37,13 @@ clock specifier, the following mapping applies:
 	1 -- OUT1
 	2 -- OUT4
 
+5P49V5935:
+	0 -- OUT0_SEL_I2CB
+	1 -- OUT1
+	2 -- OUT2
+	3 -- OUT3
+	4 -- OUT4
+
 ==Example==
 
 /* 25MHz reference crystal */
-- 
2.7.4

[PATCH v3 2/3] clk: vc5: Add bindings for IDT VersaClock 5P49V5935

[Alexey Firago]

IDT VersaClock 5 5P49V5935 has 4 clock outputs, 4 fractional dividers.
Input clock source can be taken from either integrated crystal or from
external reference clock.

Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
---
 .../devicetree/bindings/clock/idt,versaclock5.txt        | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/idt,versaclock5.txt b/Documentation/devicetree/bindings/clock/idt,versaclock5.txt
index 87e9c47..53d7e50 100644
--- a/Documentation/devicetree/bindings/clock/idt,versaclock5.txt
+++ b/Documentation/devicetree/bindings/clock/idt,versaclock5.txt
@@ -6,18 +6,21 @@ from 3 to 12 output clocks.
 ==I2C device node==
 
 Required properties:
-- compatible:	shall be one of "idt,5p49v5923" , "idt,5p49v5933".
+- compatible:	shall be one of "idt,5p49v5923" , "idt,5p49v5933" ,
+		"idt,5p49v5935".
 - reg:		i2c device address, shall be 0x68 or 0x6a.
 - #clock-cells:	from common clock binding; shall be set to 1.
 - clocks:	from common clock binding; list of parent clock handles,
 		- 5p49v5923: (required) either or both of XTAL or CLKIN
 					reference clock.
-		- 5p49v5933: (optional) property not present (internal
+		- 5p49v5933 and
+		- 5p49v5935: (optional) property not present (internal
 					Xtal used) or CLKIN reference
 					clock.
 - clock-names:	from common clock binding; clock input names, can be
 		- 5p49v5923: (required) either or both of "xin", "clkin".
-		- 5p49v5933: (optional) property not present or "clkin".
+		- 5p49v5933 and
+		- 5p49v5935: (optional) property not present or "clkin".
 
 ==Mapping between clock specifier and physical pins==
 
@@ -34,6 +37,13 @@ clock specifier, the following mapping applies:
 	1 -- OUT1
 	2 -- OUT4
 
+5P49V5935:
+	0 -- OUT0_SEL_I2CB
+	1 -- OUT1
+	2 -- OUT2
+	3 -- OUT3
+	4 -- OUT4
+
 ==Example==
 
 /* 25MHz reference crystal */
-- 
2.7.4

[PATCH v3 3/3] clk: vc5: Add support for IDT VersaClock 5P49V5935

[Alexey Firago]

Update IDT VersaClock 5 driver to support 5P49V5935. This chip has
two clock inputs (internal XTAL or external CLKIN), four fractional
dividers (FODs) and five clock outputs (four universal clock outputs
and one reference clock output at OUT0_SELB_I2C).

Current driver supports up to 2 FODs and up to 3 clock outputs. This
patch sets max number of supported FODs to 4 and max number of supported
clock outputs to 5.

Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
---
 drivers/clk/clk-versaclock5.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
index 4e81fb1..34c4e5a 100644
--- a/drivers/clk/clk-versaclock5.c
+++ b/drivers/clk/clk-versaclock5.c
@@ -114,10 +114,10 @@
 #define VC5_MUX_IN_CLKIN	BIT(1)
 
 /* Maximum number of clk_out supported by this driver */
-#define VC5_MAX_CLK_OUT_NUM	3
+#define VC5_MAX_CLK_OUT_NUM	5
 
 /* Maximum number of FODs supported by this driver */
-#define VC5_MAX_FOD_NUM	2
+#define VC5_MAX_FOD_NUM	4
 
 /* flags to describe chip features */
 /* chip has built-in oscilator */
@@ -127,6 +127,7 @@
 enum vc5_model {
 	IDT_VC5_5P49V5923,
 	IDT_VC5_5P49V5933,
+	IDT_VC5_5P49V5935,
 };
 
 /* Structure to describe features of a particular VC5 model */
@@ -594,6 +595,7 @@ static int vc5_map_index_to_output(const enum vc5_model model,
 	case IDT_VC5_5P49V5933:
 		return (n == 0) ? 0 : 3;
 	case IDT_VC5_5P49V5923:
+	case IDT_VC5_5P49V5935:
 	default:
 		return n;
 	}
@@ -790,9 +792,17 @@ static const struct vc5_chip_info idt_5p49v5933_info = {
 	.flags = VC5_HAS_INTERNAL_XTAL,
 };
 
+static const struct vc5_chip_info idt_5p49v5935_info = {
+	.model = IDT_VC5_5P49V5935,
+	.clk_fod_cnt = 4,
+	.clk_out_cnt = 5,
+	.flags = VC5_HAS_INTERNAL_XTAL,
+};
+
 static const struct i2c_device_id vc5_id[] = {
 	{ "5p49v5923", .driver_data = IDT_VC5_5P49V5923 },
 	{ "5p49v5933", .driver_data = IDT_VC5_5P49V5933 },
+	{ "5p49v5935", .driver_data = IDT_VC5_5P49V5935 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, vc5_id);
@@ -800,6 +810,7 @@ MODULE_DEVICE_TABLE(i2c, vc5_id);
 static const struct of_device_id clk_vc5_of_match[] = {
 	{ .compatible = "idt,5p49v5923", .data = &idt_5p49v5923_info },
 	{ .compatible = "idt,5p49v5933", .data = &idt_5p49v5933_info },
+	{ .compatible = "idt,5p49v5935", .data = &idt_5p49v5935_info },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, clk_vc5_of_match);
-- 
2.7.4

[PATCH v3 3/3] clk: vc5: Add support for IDT VersaClock 5P49V5935

[Alexey Firago]

Update IDT VersaClock 5 driver to support 5P49V5935. This chip has
two clock inputs (internal XTAL or external CLKIN), four fractional
dividers (FODs) and five clock outputs (four universal clock outputs
and one reference clock output at OUT0_SELB_I2C).

Current driver supports up to 2 FODs and up to 3 clock outputs. This
patch sets max number of supported FODs to 4 and max number of supported
clock outputs to 5.

Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
---
 drivers/clk/clk-versaclock5.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
index 4e81fb1..34c4e5a 100644
--- a/drivers/clk/clk-versaclock5.c
+++ b/drivers/clk/clk-versaclock5.c
@@ -114,10 +114,10 @@
 #define VC5_MUX_IN_CLKIN	BIT(1)
 
 /* Maximum number of clk_out supported by this driver */
-#define VC5_MAX_CLK_OUT_NUM	3
+#define VC5_MAX_CLK_OUT_NUM	5
 
 /* Maximum number of FODs supported by this driver */
-#define VC5_MAX_FOD_NUM	2
+#define VC5_MAX_FOD_NUM	4
 
 /* flags to describe chip features */
 /* chip has built-in oscilator */
@@ -127,6 +127,7 @@
 enum vc5_model {
 	IDT_VC5_5P49V5923,
 	IDT_VC5_5P49V5933,
+	IDT_VC5_5P49V5935,
 };
 
 /* Structure to describe features of a particular VC5 model */
@@ -594,6 +595,7 @@ static int vc5_map_index_to_output(const enum vc5_model model,
 	case IDT_VC5_5P49V5933:
 		return (n == 0) ? 0 : 3;
 	case IDT_VC5_5P49V5923:
+	case IDT_VC5_5P49V5935:
 	default:
 		return n;
 	}
@@ -790,9 +792,17 @@ static const struct vc5_chip_info idt_5p49v5933_info = {
 	.flags = VC5_HAS_INTERNAL_XTAL,
 };
 
+static const struct vc5_chip_info idt_5p49v5935_info = {
+	.model = IDT_VC5_5P49V5935,
+	.clk_fod_cnt = 4,
+	.clk_out_cnt = 5,
+	.flags = VC5_HAS_INTERNAL_XTAL,
+};
+
 static const struct i2c_device_id vc5_id[] = {
 	{ "5p49v5923", .driver_data = IDT_VC5_5P49V5923 },
 	{ "5p49v5933", .driver_data = IDT_VC5_5P49V5933 },
+	{ "5p49v5935", .driver_data = IDT_VC5_5P49V5935 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, vc5_id);
@@ -800,6 +810,7 @@ MODULE_DEVICE_TABLE(i2c, vc5_id);
 static const struct of_device_id clk_vc5_of_match[] = {
 	{ .compatible = "idt,5p49v5923", .data = &idt_5p49v5923_info },
 	{ .compatible = "idt,5p49v5933", .data = &idt_5p49v5933_info },
+	{ .compatible = "idt,5p49v5935", .data = &idt_5p49v5935_info },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, clk_vc5_of_match);
-- 
2.7.4

Re: [PATCH v3 3/3] clk: vc5: Add support for IDT VersaClock 5P49V5935

[Marek Vasut]

On 04/06/2017 11:15 AM, Alexey Firago wrote:
> Update IDT VersaClock 5 driver to support 5P49V5935. This chip has
> two clock inputs (internal XTAL or external CLKIN), four fractional
> dividers (FODs) and five clock outputs (four universal clock outputs
> and one reference clock output at OUT0_SELB_I2C).
> 
> Current driver supports up to 2 FODs and up to 3 clock outputs. This
> patch sets max number of supported FODs to 4 and max number of supported
> clock outputs to 5.
> 
> Signed-off-by: Alexey Firago <alexey_firago-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>

Reviewed-by: Marek Vasut <marek.vasut-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

I really like how easily this driver could be extended :)

> ---
>  drivers/clk/clk-versaclock5.c | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
> index 4e81fb1..34c4e5a 100644
> --- a/drivers/clk/clk-versaclock5.c
> +++ b/drivers/clk/clk-versaclock5.c
> @@ -114,10 +114,10 @@
>  #define VC5_MUX_IN_CLKIN	BIT(1)
>  
>  /* Maximum number of clk_out supported by this driver */
> -#define VC5_MAX_CLK_OUT_NUM	3
> +#define VC5_MAX_CLK_OUT_NUM	5
>  
>  /* Maximum number of FODs supported by this driver */
> -#define VC5_MAX_FOD_NUM	2
> +#define VC5_MAX_FOD_NUM	4
>  
>  /* flags to describe chip features */
>  /* chip has built-in oscilator */
> @@ -127,6 +127,7 @@
>  enum vc5_model {
>  	IDT_VC5_5P49V5923,
>  	IDT_VC5_5P49V5933,
> +	IDT_VC5_5P49V5935,
>  };
>  
>  /* Structure to describe features of a particular VC5 model */
> @@ -594,6 +595,7 @@ static int vc5_map_index_to_output(const enum vc5_model model,
>  	case IDT_VC5_5P49V5933:
>  		return (n == 0) ? 0 : 3;
>  	case IDT_VC5_5P49V5923:
> +	case IDT_VC5_5P49V5935:
>  	default:
>  		return n;
>  	}
> @@ -790,9 +792,17 @@ static const struct vc5_chip_info idt_5p49v5933_info = {
>  	.flags = VC5_HAS_INTERNAL_XTAL,
>  };
>  
> +static const struct vc5_chip_info idt_5p49v5935_info = {
> +	.model = IDT_VC5_5P49V5935,
> +	.clk_fod_cnt = 4,
> +	.clk_out_cnt = 5,
> +	.flags = VC5_HAS_INTERNAL_XTAL,
> +};
> +
>  static const struct i2c_device_id vc5_id[] = {
>  	{ "5p49v5923", .driver_data = IDT_VC5_5P49V5923 },
>  	{ "5p49v5933", .driver_data = IDT_VC5_5P49V5933 },
> +	{ "5p49v5935", .driver_data = IDT_VC5_5P49V5935 },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(i2c, vc5_id);
> @@ -800,6 +810,7 @@ MODULE_DEVICE_TABLE(i2c, vc5_id);
>  static const struct of_device_id clk_vc5_of_match[] = {
>  	{ .compatible = "idt,5p49v5923", .data = &idt_5p49v5923_info },
>  	{ .compatible = "idt,5p49v5933", .data = &idt_5p49v5933_info },
> +	{ .compatible = "idt,5p49v5935", .data = &idt_5p49v5935_info },
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(of, clk_vc5_of_match);
> 


-- 
Best regards,
Marek Vasut
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Re: [PATCH v3 3/3] clk: vc5: Add support for IDT VersaClock 5P49V5935

[Marek Vasut]

On 04/06/2017 11:15 AM, Alexey Firago wrote:
> Update IDT VersaClock 5 driver to support 5P49V5935. This chip has
> two clock inputs (internal XTAL or external CLKIN), four fractional
> dividers (FODs) and five clock outputs (four universal clock outputs
> and one reference clock output at OUT0_SELB_I2C).
> 
> Current driver supports up to 2 FODs and up to 3 clock outputs. This
> patch sets max number of supported FODs to 4 and max number of supported
> clock outputs to 5.
> 
> Signed-off-by: Alexey Firago <alexey_firago@mentor.com>

Reviewed-by: Marek Vasut <marek.vasut@gmail.com>

I really like how easily this driver could be extended :)

> ---
>  drivers/clk/clk-versaclock5.c | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
> index 4e81fb1..34c4e5a 100644
> --- a/drivers/clk/clk-versaclock5.c
> +++ b/drivers/clk/clk-versaclock5.c
> @@ -114,10 +114,10 @@
>  #define VC5_MUX_IN_CLKIN	BIT(1)
>  
>  /* Maximum number of clk_out supported by this driver */
> -#define VC5_MAX_CLK_OUT_NUM	3
> +#define VC5_MAX_CLK_OUT_NUM	5
>  
>  /* Maximum number of FODs supported by this driver */
> -#define VC5_MAX_FOD_NUM	2
> +#define VC5_MAX_FOD_NUM	4
>  
>  /* flags to describe chip features */
>  /* chip has built-in oscilator */
> @@ -127,6 +127,7 @@
>  enum vc5_model {
>  	IDT_VC5_5P49V5923,
>  	IDT_VC5_5P49V5933,
> +	IDT_VC5_5P49V5935,
>  };
>  
>  /* Structure to describe features of a particular VC5 model */
> @@ -594,6 +595,7 @@ static int vc5_map_index_to_output(const enum vc5_model model,
>  	case IDT_VC5_5P49V5933:
>  		return (n == 0) ? 0 : 3;
>  	case IDT_VC5_5P49V5923:
> +	case IDT_VC5_5P49V5935:
>  	default:
>  		return n;
>  	}
> @@ -790,9 +792,17 @@ static const struct vc5_chip_info idt_5p49v5933_info = {
>  	.flags = VC5_HAS_INTERNAL_XTAL,
>  };
>  
> +static const struct vc5_chip_info idt_5p49v5935_info = {
> +	.model = IDT_VC5_5P49V5935,
> +	.clk_fod_cnt = 4,
> +	.clk_out_cnt = 5,
> +	.flags = VC5_HAS_INTERNAL_XTAL,
> +};
> +
>  static const struct i2c_device_id vc5_id[] = {
>  	{ "5p49v5923", .driver_data = IDT_VC5_5P49V5923 },
>  	{ "5p49v5933", .driver_data = IDT_VC5_5P49V5933 },
> +	{ "5p49v5935", .driver_data = IDT_VC5_5P49V5935 },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(i2c, vc5_id);
> @@ -800,6 +810,7 @@ MODULE_DEVICE_TABLE(i2c, vc5_id);
>  static const struct of_device_id clk_vc5_of_match[] = {
>  	{ .compatible = "idt,5p49v5923", .data = &idt_5p49v5923_info },
>  	{ .compatible = "idt,5p49v5933", .data = &idt_5p49v5933_info },
> +	{ .compatible = "idt,5p49v5935", .data = &idt_5p49v5935_info },
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(of, clk_vc5_of_match);
> 


-- 
Best regards,
Marek Vasut