[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Michal Simek]

Command provides just dump subcommand for showing clock
frequencies in a soc.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

 README                   |  1 +
 common/Makefile          |  1 +
 common/cmd_clk.c         | 51 ++++++++++++++++++++++++++++++++++++++++++++++++
 include/clk.h            |  6 ++++++
 include/config_cmd_all.h |  1 +
 5 files changed, 60 insertions(+)
 create mode 100644 common/cmd_clk.c
 create mode 100644 include/clk.h

diff --git a/README b/README
index aea82be..0087649 100644
--- a/README
+++ b/README
@@ -887,6 +887,7 @@ The following options need to be configured:
 		CONFIG_CMD_BSP		* Board specific commands
 		CONFIG_CMD_BOOTD	  bootd
 		CONFIG_CMD_CACHE	* icache, dcache
+		CONFIG_CMD_CLK   	* clock command support
 		CONFIG_CMD_CONSOLE	  coninfo
 		CONFIG_CMD_CRC32	* crc32
 		CONFIG_CMD_DATE		* support for RTC, date/time...
diff --git a/common/Makefile b/common/Makefile
index d12cba5..a000e7d 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -59,6 +59,7 @@ obj-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o
 obj-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o
 obj-$(CONFIG_CMD_CACHE) += cmd_cache.o
 obj-$(CONFIG_CMD_CBFS) += cmd_cbfs.o
+obj-$(CONFIG_CMD_CLK) += cmd_clk.o
 obj-$(CONFIG_CMD_CONSOLE) += cmd_console.o
 obj-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o
 obj-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o
diff --git a/common/cmd_clk.c b/common/cmd_clk.c
new file mode 100644
index 0000000..6d3d46a
--- /dev/null
+++ b/common/cmd_clk.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2013 Xilinx, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <command.h>
+#include <clk.h>
+
+int __weak soc_clk_dump(void)
+{
+	puts("Not implemented\n");
+	return 1;
+}
+
+static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
+		       char *const argv[])
+{
+	return soc_clk_dump();
+}
+
+static cmd_tbl_t cmd_clk_sub[] = {
+	U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""),
+};
+
+static int do_clk(cmd_tbl_t *cmdtp, int flag, int argc,
+		  char *const argv[])
+{
+	cmd_tbl_t *c;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	/* Strip off leading 'clk' command argument */
+	argc--;
+	argv++;
+
+	c = find_cmd_tbl(argv[0], &cmd_clk_sub[0], ARRAY_SIZE(cmd_clk_sub));
+
+	if (c)
+		return c->cmd(cmdtp, flag, argc, argv);
+	else
+		return CMD_RET_USAGE;
+}
+
+#ifdef CONFIG_SYS_LONGHELP
+static char clk_help_text[] =
+	"dump - Print clock frequencies";
+#endif
+
+U_BOOT_CMD(clk, 2, 1, do_clk, "CLK sub-system", clk_help_text);
diff --git a/include/clk.h b/include/clk.h
new file mode 100644
index 0000000..df4570c
--- /dev/null
+++ b/include/clk.h
@@ -0,0 +1,6 @@
+#ifndef _CLK_H_
+#define _CLK_H_
+
+int soc_clk_dump(void);
+
+#endif /* _CLK_H_ */
diff --git a/include/config_cmd_all.h b/include/config_cmd_all.h
index d847069..3e8983f 100644
--- a/include/config_cmd_all.h
+++ b/include/config_cmd_all.h
@@ -23,6 +23,7 @@
 #define CONFIG_CMD_BSP		/* Board Specific functions	*/
 #define CONFIG_CMD_CACHE	/* icache, dcache		*/
 #define CONFIG_CMD_CDP		/* Cisco Discovery Protocol	*/
+#define CONFIG_CMD_CLK		/* Clock support		*/
 #define CONFIG_CMD_CONSOLE	/* coninfo			*/
 #define CONFIG_CMD_DATE		/* support for RTC, date/time...*/
 #define CONFIG_CMD_DHCP		/* DHCP Support			*/
--
1.8.2.3

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[U-Boot] [RFC PATCH 2/2] zynq: Implement dump clock command

[Michal Simek]

From: Soren Brinkmann <soren.brinkmann@xilinx.com>

Enable and implement dump clock command which shows
soc frequencies.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---
On the top of Zynq clk patches I have sent.

All paches available for testing here
git://git.denx.de/u-boot-microblaze.git
xnext/clk-cmd branch.

For example:
zynq-uboot> clk dump
clk		frequency
    armpll          1333333320
    ddrpll          1066666656
     iopll           999999990
 cpu_6or4x           666666660
 cpu_3or2x           333333330
    cpu_2x           222222220
    cpu_1x           111111110
    ddr_2x           355555552
    ddr_3x           533333328
       dci            10158730
     lqspi           199999998
       smc            22222222
      pcap           199999998
      gem0            25000000
      gem1            16666667
     fclk0            50000000
     fclk1            50000000
     fclk2            50000000
     fclk3            50000000
     sdio0            50000000
     sdio1            50000000
     uart0            50000000
     uart1            50000000
      spi0            15873016
      spi1            15873016
 usb0_aper           111111110
 usb1_aper           111111110
 gem0_aper           111111110
 gem1_aper           111111110
sdio0_aper           111111110
sdio1_aper           111111110
 spi0_aper           111111110
 spi1_aper           111111110
 can0_aper           111111110
 can1_aper           111111110
 i2c0_aper           111111110
 i2c1_aper           111111110
uart0_aper           111111110
uart1_aper           111111110
 gpio_aper           111111110
lqspi_aper           111111110
  smc_aper           111111110
   dbg_trc            66666666
   dbg_apb            66666666

 arch/arm/cpu/armv7/zynq/clk.c | 21 +++++++++++++++++++++
 include/configs/zynq-common.h |  1 +
 2 files changed, 22 insertions(+)

diff --git a/arch/arm/cpu/armv7/zynq/clk.c b/arch/arm/cpu/armv7/zynq/clk.c
index ea7a677..6a759a1 100644
--- a/arch/arm/cpu/armv7/zynq/clk.c
+++ b/arch/arm/cpu/armv7/zynq/clk.c
@@ -6,6 +6,7 @@
  */
 #include <common.h>
 #include <errno.h>
+#include <clk.h>
 #include <asm/io.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/clk.h>
@@ -641,3 +642,23 @@ const char *zynq_clk_get_name(enum zynq_clk clk)
 {
 	return clks[clk].name;
 }
+
+/**
+ * soc_clk_dump() - Print clock frequencies
+ * Returns zero on success
+ *
+ * Implementation for the clk dump command.
+ */
+int soc_clk_dump(void)
+{
+	int i;
+
+	printf("clk\t\tfrequency\n");
+	for (i = 0; i < clk_max; i++) {
+		const char *name = zynq_clk_get_name(i);
+		if (name)
+			printf("%10s%20lu\n", name, zynq_clk_get_rate(i));
+	}
+
+	return 0;
+}
diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h
index 9666f88..52f1c66 100644
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@@ -164,6 +164,7 @@
 #define CONFIG_BOARD_LATE_INIT
 #define CONFIG_SYS_LONGHELP
 #define CONFIG_CLOCKS
+#define CONFIG_CMD_CLK
 #define CONFIG_SYS_MAXARGS		15 /* max number of command args */
 #define CONFIG_SYS_CBSIZE		256 /* Console I/O Buffer Size */
 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + \
--
1.8.2.3

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[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Stefano Babic]

Hi Michal,

On 22/01/2014 12:02, Michal Simek wrote:
> Command provides just dump subcommand for showing clock frequencies
> in a soc.
> 

i.MXes has already an own command for this functionality - see command
"clocks" in arch/arm. However, I like that we can have a common
command for all SOCs.


> Signed-off-by: Michal Simek <michal.simek@xilinx.com> ---
> 
> README                   |  1 + common/Makefile          |  1 + 
> common/cmd_clk.c         | 51
> ++++++++++++++++++++++++++++++++++++++++++++++++ include/clk.h
> |  6 ++++++ include/config_cmd_all.h |  1 + 5 files changed, 60
> insertions(+) create mode 100644 common/cmd_clk.c create mode
> 100644 include/clk.h
> 
> diff --git a/README b/README index aea82be..0087649 100644 ---
> a/README +++ b/README @@ -887,6 +887,7 @@ The following options
> need to be configured: CONFIG_CMD_BSP		* Board specific commands 
> CONFIG_CMD_BOOTD	  bootd CONFIG_CMD_CACHE	* icache, dcache +
> CONFIG_CMD_CLK   	* clock command support CONFIG_CMD_CONSOLE
> coninfo CONFIG_CMD_CRC32	* crc32 CONFIG_CMD_DATE		* support for
> RTC, date/time... diff --git a/common/Makefile b/common/Makefile 
> index d12cba5..a000e7d 100644 --- a/common/Makefile +++
> b/common/Makefile @@ -59,6 +59,7 @@ obj-$(CONFIG_CMD_BOOTLDR) +=
> cmd_bootldr.o obj-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o 
> obj-$(CONFIG_CMD_CACHE) += cmd_cache.o obj-$(CONFIG_CMD_CBFS) +=
> cmd_cbfs.o +obj-$(CONFIG_CMD_CLK) += cmd_clk.o 
> obj-$(CONFIG_CMD_CONSOLE) += cmd_console.o 
> obj-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o 
> obj-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o diff
> --git a/common/cmd_clk.c b/common/cmd_clk.c new file mode 100644 
> index 0000000..6d3d46a --- /dev/null +++ b/common/cmd_clk.c @@ -0,0
> +1,51 @@ +/* + * Copyright (C) 2013 Xilinx, Inc. + * + *
> SPDX-License-Identifier:	GPL-2.0+ + */ +#include <common.h> 
> +#include <command.h> +#include <clk.h> + +int __weak
> soc_clk_dump(void) +{ +	puts("Not implemented\n"); +	return 1; +} 
> + +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc, +
> char *const argv[]) +{ +	return soc_clk_dump(); +} + +static
> cmd_tbl_t cmd_clk_sub[] = { +	U_BOOT_CMD_MKENT(dump, 1, 1,
> do_clk_dump, "", ""), +}; +

Do you plan to extend the list with new functionalities ? IMHO we
should do it when we really need, that is when we will need at least a
second subcommand.

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
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
=====================================================================

[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Michal Simek]

Hi Stefano,

On 01/22/2014 01:46 PM, Stefano Babic wrote:
> Hi Michal,
> 
> On 22/01/2014 12:02, Michal Simek wrote:
>> Command provides just dump subcommand for showing clock frequencies
>> in a soc.
>>
> 
> i.MXes has already an own command for this functionality - see command
> "clocks" in arch/arm. However, I like that we can have a common
> command for all SOCs.

Ah good to know. It seems to me better to have clock like command name
and then subcommand. Unification will be good to have.


> 
>> Signed-off-by: Michal Simek <michal.simek@xilinx.com> ---
>>
>> README                   |  1 + common/Makefile          |  1 + 
>> common/cmd_clk.c         | 51
>> ++++++++++++++++++++++++++++++++++++++++++++++++ include/clk.h
>> |  6 ++++++ include/config_cmd_all.h |  1 + 5 files changed, 60
>> insertions(+) create mode 100644 common/cmd_clk.c create mode
>> 100644 include/clk.h
>>
>> diff --git a/README b/README index aea82be..0087649 100644 ---
>> a/README +++ b/README @@ -887,6 +887,7 @@ The following options
>> need to be configured: CONFIG_CMD_BSP		* Board specific commands 
>> CONFIG_CMD_BOOTD	  bootd CONFIG_CMD_CACHE	* icache, dcache +
>> CONFIG_CMD_CLK   	* clock command support CONFIG_CMD_CONSOLE
>> coninfo CONFIG_CMD_CRC32	* crc32 CONFIG_CMD_DATE		* support for
>> RTC, date/time... diff --git a/common/Makefile b/common/Makefile 
>> index d12cba5..a000e7d 100644 --- a/common/Makefile +++
>> b/common/Makefile @@ -59,6 +59,7 @@ obj-$(CONFIG_CMD_BOOTLDR) +=
>> cmd_bootldr.o obj-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o 
>> obj-$(CONFIG_CMD_CACHE) += cmd_cache.o obj-$(CONFIG_CMD_CBFS) +=
>> cmd_cbfs.o +obj-$(CONFIG_CMD_CLK) += cmd_clk.o 
>> obj-$(CONFIG_CMD_CONSOLE) += cmd_console.o 
>> obj-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o 
>> obj-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o diff
>> --git a/common/cmd_clk.c b/common/cmd_clk.c new file mode 100644 
>> index 0000000..6d3d46a --- /dev/null +++ b/common/cmd_clk.c @@ -0,0
>> +1,51 @@ +/* + * Copyright (C) 2013 Xilinx, Inc. + * + *
>> SPDX-License-Identifier:	GPL-2.0+ + */ +#include <common.h> 
>> +#include <command.h> +#include <clk.h> + +int __weak
>> soc_clk_dump(void) +{ +	puts("Not implemented\n"); +	return 1; +} 
>> + +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc, +
>> char *const argv[]) +{ +	return soc_clk_dump(); +} + +static
>> cmd_tbl_t cmd_clk_sub[] = { +	U_BOOT_CMD_MKENT(dump, 1, 1,
>> do_clk_dump, "", ""), +}; +
> 
> Do you plan to extend the list with new functionalities ? IMHO we
> should do it when we really need, that is when we will need at least a
> second subcommand.

I tried to write it as generic as possible and currently we don't need
any special clock functionality but it can happen in future.

Will be great if we can add all the clock handling to the one command,
Currently we just use clock dump.

Thanks,
Michal

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform


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[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Gerhard Sittig]

On Wed, Jan 22, 2014 at 12:02 +0100, Michal Simek wrote:
> 
> --- /dev/null
> +++ b/common/cmd_clk.c
> @@ -0,0 +1,51 @@
> +/*
> + * Copyright (C) 2013 Xilinx, Inc.
> + *
> + * SPDX-License-Identifier:	GPL-2.0+
> + */
> +#include <common.h>
> +#include <command.h>
> +#include <clk.h>
> +
> +int __weak soc_clk_dump(void)
> +{
> +	puts("Not implemented\n");
> +	return 1;
> +}
> +
> +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
> +		       char *const argv[])
> +{
> +	return soc_clk_dump();
> +}

Is there a specific reason to not pass on the remaining (not yet
consumed) command line arguments?  Future implementations may
want to take a clock item's name, or a clock group's name, or
options related to the format or verbosity of the dump, et al.


virtually yours
Gerhard Sittig
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Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de

[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Michal Simek]

On 01/22/2014 08:44 PM, Gerhard Sittig wrote:
> On Wed, Jan 22, 2014 at 12:02 +0100, Michal Simek wrote:
>>
>> --- /dev/null
>> +++ b/common/cmd_clk.c
>> @@ -0,0 +1,51 @@
>> +/*
>> + * Copyright (C) 2013 Xilinx, Inc.
>> + *
>> + * SPDX-License-Identifier:	GPL-2.0+
>> + */
>> +#include <common.h>
>> +#include <command.h>
>> +#include <clk.h>
>> +
>> +int __weak soc_clk_dump(void)
>> +{
>> +	puts("Not implemented\n");
>> +	return 1;
>> +}
>> +
>> +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
>> +		       char *const argv[])
>> +{
>> +	return soc_clk_dump();
>> +}
> 
> Is there a specific reason to not pass on the remaining (not yet
> consumed) command line arguments?  Future implementations may
> want to take a clock item's name, or a clock group's name, or
> options related to the format or verbosity of the dump, et al.

Only one reason is that I don't need it for my zynq implementation.
If this is necessary there is no problem to pass them because
it is internal API. Also I prefer to pass just arguments
which I need.

I have looked at i.MXes cases and they do in general what
my zynq implementation. They can just include clk.h and
change do_mx6_showclocks to soc_clk_dump.

Thanks,
Michal

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform


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[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Michal Simek]

On 01/23/2014 08:53 AM, Michal Simek wrote:
> On 01/22/2014 08:44 PM, Gerhard Sittig wrote:
>> On Wed, Jan 22, 2014 at 12:02 +0100, Michal Simek wrote:
>>>
>>> --- /dev/null
>>> +++ b/common/cmd_clk.c
>>> @@ -0,0 +1,51 @@
>>> +/*
>>> + * Copyright (C) 2013 Xilinx, Inc.
>>> + *
>>> + * SPDX-License-Identifier:	GPL-2.0+
>>> + */
>>> +#include <common.h>
>>> +#include <command.h>
>>> +#include <clk.h>
>>> +
>>> +int __weak soc_clk_dump(void)
>>> +{
>>> +	puts("Not implemented\n");
>>> +	return 1;
>>> +}
>>> +
>>> +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
>>> +		       char *const argv[])
>>> +{
>>> +	return soc_clk_dump();
>>> +}
>>
>> Is there a specific reason to not pass on the remaining (not yet
>> consumed) command line arguments?  Future implementations may
>> want to take a clock item's name, or a clock group's name, or
>> options related to the format or verbosity of the dump, et al.
> 
> Only one reason is that I don't need it for my zynq implementation.
> If this is necessary there is no problem to pass them because
> it is internal API. Also I prefer to pass just arguments
> which I need.
> 
> I have looked at i.MXes cases and they do in general what
> my zynq implementation. They can just include clk.h and
> change do_mx6_showclocks to soc_clk_dump.

Stefano: Can you give me your ACK?

Tom: Do you have any problem with this new clk command?

Thanks,
Michal


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform


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[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Stefano Babic]

Hi Michal,

On 30/01/2014 08:38, Michal Simek wrote:
> On 01/23/2014 08:53 AM, Michal Simek wrote:
>> On 01/22/2014 08:44 PM, Gerhard Sittig wrote:
>>> On Wed, Jan 22, 2014 at 12:02 +0100, Michal Simek wrote:
>>>> 
>>>> --- /dev/null +++ b/common/cmd_clk.c @@ -0,0 +1,51 @@ +/* +
>>>> * Copyright (C) 2013 Xilinx, Inc. + * + * 
>>>> SPDX-License-Identifier:	GPL-2.0+ + */ +#include <common.h> 
>>>> +#include <command.h> +#include <clk.h> + +int __weak 
>>>> soc_clk_dump(void) +{ +	puts("Not implemented\n"); +	return 
>>>> 1; +} + +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, 
>>>> int argc, +		       char *const argv[]) +{ +	return 
>>>> soc_clk_dump(); +}
>>> 
>>> Is there a specific reason to not pass on the remaining (not 
>>> yet consumed) command line arguments?  Future implementations 
>>> may want to take a clock item's name, or a clock group's name, 
>>> or options related to the format or verbosity of the dump, et 
>>> al.
>> 
>> Only one reason is that I don't need it for my zynq 
>> implementation. If this is necessary there is no problem to pass 
>> them because it is internal API. Also I prefer to pass just 
>> arguments which I need.
>> 
>> I have looked at i.MXes cases and they do in general what my
>> zynq implementation. They can just include clk.h and change 
>> do_mx6_showclocks to soc_clk_dump.
> 

Agree.

> Stefano: Can you give me your ACK?
> 

Sure, go on. !


Regards,
Stefano

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=====================================================================
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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
=====================================================================

[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Simon Glass]

Hi Michal,

On 22 January 2014 at 04:02, Michal Simek <michal.simek@xilinx.com> wrote:
> Command provides just dump subcommand for showing clock
> frequencies in a soc.
>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> ---
>
>  README                   |  1 +
>  common/Makefile          |  1 +
>  common/cmd_clk.c         | 51 ++++++++++++++++++++++++++++++++++++++++++++++++
>  include/clk.h            |  6 ++++++
>  include/config_cmd_all.h |  1 +
>  5 files changed, 60 insertions(+)
>  create mode 100644 common/cmd_clk.c
>  create mode 100644 include/clk.h
>
> diff --git a/README b/README
> index aea82be..0087649 100644
> --- a/README
> +++ b/README
> @@ -887,6 +887,7 @@ The following options need to be configured:
>                 CONFIG_CMD_BSP          * Board specific commands
>                 CONFIG_CMD_BOOTD          bootd
>                 CONFIG_CMD_CACHE        * icache, dcache
> +               CONFIG_CMD_CLK          * clock command support
>                 CONFIG_CMD_CONSOLE        coninfo
>                 CONFIG_CMD_CRC32        * crc32
>                 CONFIG_CMD_DATE         * support for RTC, date/time...
> diff --git a/common/Makefile b/common/Makefile
> index d12cba5..a000e7d 100644
> --- a/common/Makefile
> +++ b/common/Makefile
> @@ -59,6 +59,7 @@ obj-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o
>  obj-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o
>  obj-$(CONFIG_CMD_CACHE) += cmd_cache.o
>  obj-$(CONFIG_CMD_CBFS) += cmd_cbfs.o
> +obj-$(CONFIG_CMD_CLK) += cmd_clk.o
>  obj-$(CONFIG_CMD_CONSOLE) += cmd_console.o
>  obj-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o
>  obj-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o
> diff --git a/common/cmd_clk.c b/common/cmd_clk.c
> new file mode 100644
> index 0000000..6d3d46a
> --- /dev/null
> +++ b/common/cmd_clk.c
> @@ -0,0 +1,51 @@
> +/*
> + * Copyright (C) 2013 Xilinx, Inc.
> + *
> + * SPDX-License-Identifier:    GPL-2.0+
> + */
> +#include <common.h>
> +#include <command.h>
> +#include <clk.h>
> +
> +int __weak soc_clk_dump(void)
> +{
> +       puts("Not implemented\n");
> +       return 1;
> +}
> +
> +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
> +                      char *const argv[])
> +{
> +       return soc_clk_dump();

This is not the way things should work in driver model. See how the
gpio command works for an example. I suggest it iterates through the
available clocks and then calls a driver function to obtain
information about each clock, then prints it out. We should avoid weak
functions as a method of connecting things together.

[snip]

Regards,
Simon

[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Michal Simek]

Hi Simon,

On 22.12.2015 05:21, Simon Glass wrote:
> Hi Michal,
> 
> On 22 January 2014 at 04:02, Michal Simek <michal.simek@xilinx.com> wrote:
>> Command provides just dump subcommand for showing clock
>> frequencies in a soc.
>>
>> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
>> ---
>>
>>  README                   |  1 +
>>  common/Makefile          |  1 +
>>  common/cmd_clk.c         | 51 ++++++++++++++++++++++++++++++++++++++++++++++++
>>  include/clk.h            |  6 ++++++
>>  include/config_cmd_all.h |  1 +
>>  5 files changed, 60 insertions(+)
>>  create mode 100644 common/cmd_clk.c
>>  create mode 100644 include/clk.h
>>
>> diff --git a/README b/README
>> index aea82be..0087649 100644
>> --- a/README
>> +++ b/README
>> @@ -887,6 +887,7 @@ The following options need to be configured:
>>                 CONFIG_CMD_BSP          * Board specific commands
>>                 CONFIG_CMD_BOOTD          bootd
>>                 CONFIG_CMD_CACHE        * icache, dcache
>> +               CONFIG_CMD_CLK          * clock command support
>>                 CONFIG_CMD_CONSOLE        coninfo
>>                 CONFIG_CMD_CRC32        * crc32
>>                 CONFIG_CMD_DATE         * support for RTC, date/time...
>> diff --git a/common/Makefile b/common/Makefile
>> index d12cba5..a000e7d 100644
>> --- a/common/Makefile
>> +++ b/common/Makefile
>> @@ -59,6 +59,7 @@ obj-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o
>>  obj-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o
>>  obj-$(CONFIG_CMD_CACHE) += cmd_cache.o
>>  obj-$(CONFIG_CMD_CBFS) += cmd_cbfs.o
>> +obj-$(CONFIG_CMD_CLK) += cmd_clk.o
>>  obj-$(CONFIG_CMD_CONSOLE) += cmd_console.o
>>  obj-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o
>>  obj-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o
>> diff --git a/common/cmd_clk.c b/common/cmd_clk.c
>> new file mode 100644
>> index 0000000..6d3d46a
>> --- /dev/null
>> +++ b/common/cmd_clk.c
>> @@ -0,0 +1,51 @@
>> +/*
>> + * Copyright (C) 2013 Xilinx, Inc.
>> + *
>> + * SPDX-License-Identifier:    GPL-2.0+
>> + */
>> +#include <common.h>
>> +#include <command.h>
>> +#include <clk.h>
>> +
>> +int __weak soc_clk_dump(void)
>> +{
>> +       puts("Not implemented\n");
>> +       return 1;
>> +}
>> +
>> +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
>> +                      char *const argv[])
>> +{
>> +       return soc_clk_dump();
> 
> This is not the way things should work in driver model. See how the
> gpio command works for an example. I suggest it iterates through the
> available clocks and then calls a driver function to obtain
> information about each clock, then prints it out. We should avoid weak
> functions as a method of connecting things together.

This is patch which was sent in 2014. What are you trying to suggest?

Cheers,
Michal

[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Simon Glass]

Hi Michal,

On 29 December 2015 at 01:33, Michal Simek <michal.simek@xilinx.com> wrote:
> Hi Simon,
>
> On 22.12.2015 05:21, Simon Glass wrote:
>> Hi Michal,
>>
>> On 22 January 2014 at 04:02, Michal Simek <michal.simek@xilinx.com> wrote:
>>> Command provides just dump subcommand for showing clock
>>> frequencies in a soc.
>>>
>>> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
>>> ---
>>>
>>>  README                   |  1 +
>>>  common/Makefile          |  1 +
>>>  common/cmd_clk.c         | 51 ++++++++++++++++++++++++++++++++++++++++++++++++
>>>  include/clk.h            |  6 ++++++
>>>  include/config_cmd_all.h |  1 +
>>>  5 files changed, 60 insertions(+)
>>>  create mode 100644 common/cmd_clk.c
>>>  create mode 100644 include/clk.h
>>>
>>> diff --git a/README b/README
>>> index aea82be..0087649 100644
>>> --- a/README
>>> +++ b/README
>>> @@ -887,6 +887,7 @@ The following options need to be configured:
>>>                 CONFIG_CMD_BSP          * Board specific commands
>>>                 CONFIG_CMD_BOOTD          bootd
>>>                 CONFIG_CMD_CACHE        * icache, dcache
>>> +               CONFIG_CMD_CLK          * clock command support
>>>                 CONFIG_CMD_CONSOLE        coninfo
>>>                 CONFIG_CMD_CRC32        * crc32
>>>                 CONFIG_CMD_DATE         * support for RTC, date/time...
>>> diff --git a/common/Makefile b/common/Makefile
>>> index d12cba5..a000e7d 100644
>>> --- a/common/Makefile
>>> +++ b/common/Makefile
>>> @@ -59,6 +59,7 @@ obj-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o
>>>  obj-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o
>>>  obj-$(CONFIG_CMD_CACHE) += cmd_cache.o
>>>  obj-$(CONFIG_CMD_CBFS) += cmd_cbfs.o
>>> +obj-$(CONFIG_CMD_CLK) += cmd_clk.o
>>>  obj-$(CONFIG_CMD_CONSOLE) += cmd_console.o
>>>  obj-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o
>>>  obj-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o
>>> diff --git a/common/cmd_clk.c b/common/cmd_clk.c
>>> new file mode 100644
>>> index 0000000..6d3d46a
>>> --- /dev/null
>>> +++ b/common/cmd_clk.c
>>> @@ -0,0 +1,51 @@
>>> +/*
>>> + * Copyright (C) 2013 Xilinx, Inc.
>>> + *
>>> + * SPDX-License-Identifier:    GPL-2.0+
>>> + */
>>> +#include <common.h>
>>> +#include <command.h>
>>> +#include <clk.h>
>>> +
>>> +int __weak soc_clk_dump(void)
>>> +{
>>> +       puts("Not implemented\n");
>>> +       return 1;
>>> +}
>>> +
>>> +static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
>>> +                      char *const argv[])
>>> +{
>>> +       return soc_clk_dump();
>>
>> This is not the way things should work in driver model. See how the
>> gpio command works for an example. I suggest it iterates through the
>> available clocks and then calls a driver function to obtain
>> information about each clock, then prints it out. We should avoid weak
>> functions as a method of connecting things together.
>
> This is patch which was sent in 2014. What are you trying to suggest?

Sorry, I only just noticed it. I'll see if I can create a patch to get
the clock info from an API call instead of using a weak function.

Regards,
Simon

[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Wolfgang Denk]

Dear Simon,

In message <CAPnjgZ0AxfXOiBwrjEPgs_Kd2A1x7qZ_z9gn_QAiprUS+48E_Q@mail.gmail.com> you wrote:
> 
> >>>  create mode 100644 common/cmd_clk.c
> >>>  create mode 100644 include/clk.h
...
> Sorry, I only just noticed it. I'll see if I can create a patch to get
> the clock info from an API call instead of using a weak function.

I don't get it. This patch appears to be identical (?) to commit
08d0d6f: "common: Add new clk command" which was applied in Nov 2013.

Best regards,

Wolfgang Denk

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HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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succeeded in creating a generation of users who don't understand  the
concept of a shell...
            -- L. Peter Deutsch in <m0x5jNX-000R2UC@lamp.aladdin.com>

[U-Boot] [RFC PATCH 1/2] common: Add new clk command

[Simon Glass]

Hi Wolfgang,

On 29 December 2015 at 07:23, Wolfgang Denk <wd@denx.de> wrote:
> Dear Simon,
>
> In message <CAPnjgZ0AxfXOiBwrjEPgs_Kd2A1x7qZ_z9gn_QAiprUS+48E_Q@mail.gmail.com> you wrote:
>>
>> >>>  create mode 100644 common/cmd_clk.c
>> >>>  create mode 100644 include/clk.h
> ...
>> Sorry, I only just noticed it. I'll see if I can create a patch to get
>> the clock info from an API call instead of using a weak function.
>
> I don't get it. This patch appears to be identical (?) to commit
> 08d0d6f: "common: Add new clk command" which was applied in Nov 2013.

Yes, I did not realise how old this patch was, sorry. It was applied
long ago. I'm going to create a vendor-specific command which uses
driver model for now. We can revisit this if it becomes a problem. My
idea is that we should have a command which displays the current
clocks, no matter what the board type. But that can come later.

Regards,
Simon