RE: [PATCH 4/8] drivers: ddr: imx8m: add print for DRAM rate
> Subject: Re: [PATCH 4/8] drivers: ddr: imx8m: add print for DRAM rate
>
> On 11.05.20 11:53, Peng Fan wrote:
> > From: Ye Li
> >
> > Enable print to show the DRAM rate of current setting and training
> > result.
> >
> > Reviewed-by: Peng Fan
> > Signed-off-by: Ye Li
> > Signed-off-by: Peng Fan
> > ---
>
> This changes the boottime, too. The printf() are really useful only for
> debugging, IMHO it is better to let it as it is. If something is going wrong,
> one
> set DEBUG to get the output.
ok. I'll drop this patch from the patchset.
Thanks,
Peng.
>
> Regards,
> Stefano
>
> > drivers/ddr/imx/imx8m/ddr_init.c | 7 ---
> > drivers/ddr/imx/imx8m/ddrphy_utils.c | 2 +-
> > 2 files changed, 5 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/ddr/imx/imx8m/ddr_init.c
> > b/drivers/ddr/imx/imx8m/ddr_init.c
> > index f573a778d9..a1d2d21692 100644
> > --- a/drivers/ddr/imx/imx8m/ddr_init.c
> > +++ b/drivers/ddr/imx/imx8m/ddr_init.c
> > @@ -95,7 +95,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
> > unsigned int tmp, initial_drate, target_freq;
> > int ret;
> >
> > - debug("DDRINFO: start DRAM init\n");
> > + printf("DDRINFO: start DRAM init\n");
> >
> > /* Step1: Follow the power up procedure */
> > if (is_imx8mq()) {
> > @@ -118,6 +118,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
> >
> > initial_drate = dram_timing->fsp_msg[0].drate;
> > /* default to the frequency point 0 clock */
> > + printf("DDRINFO: DRAM rate %dMTS\n", initial_drate);
>
>
>
> > ddrphy_init_set_dfi_clk(initial_drate);
> >
> > /* D-aasert the presetn */
> > @@ -184,7 +185,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
> > tmp = reg32_read(DDRPHY_CalBusy(0));
> > } while ((tmp & 0x1));
> >
> > - debug("DDRINFO:ddrphy calibration done\n");
> > + printf("DDRINFO:ddrphy calibration done\n");
> >
> > /* Step15: Set SWCTL.sw_done to 0 */
> > reg32_write(DDRC_SWCTL(0), 0x); @@ -236,7 +237,7 @@ int
> > ddr_init(struct dram_timing_info *dram_timing)
> >
> > /* enable port 0 */
> > reg32_write(DDRC_PCTRL_0(0), 0x0001);
> > - debug("DDRINFO: ddrmix config done\n");
> > + printf("DDRINFO: ddrmix config done\n");
> >
> > board_dram_ecc_scrub();
> >
> > diff --git a/drivers/ddr/imx/imx8m/ddrphy_utils.c
> > b/drivers/ddr/imx/imx8m/ddrphy_utils.c
> > index 9ac7ca923c..9d2378d7dd 100644
> > --- a/drivers/ddr/imx/imx8m/ddrphy_utils.c
> > +++ b/drivers/ddr/imx/imx8m/ddrphy_utils.c
> > @@ -97,7 +97,7 @@ int wait_ddrphy_training_complete(void)
> > debug("Training PASS\n");
> > return 0;
> > } else if (mail == 0xff) {
> > - debug("Training FAILED\n");
> > + printf("Training FAILED\n");
> > return -1;
> > }
> > }
> >
>
>
> --
> ==
> ===
> 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: sba...@denx.de
> ==
> ===
Re: [PATCH 4/8] drivers: ddr: imx8m: add print for DRAM rate
On 11.05.20 11:53, Peng Fan wrote:
> From: Ye Li
>
> Enable print to show the DRAM rate of current setting and training
> result.
>
> Reviewed-by: Peng Fan
> Signed-off-by: Ye Li
> Signed-off-by: Peng Fan
> ---
This changes the boottime, too. The printf() are really useful only for
debugging, IMHO it is better to let it as it is. If something is going
wrong, one set DEBUG to get the output.
Regards,
Stefano
> drivers/ddr/imx/imx8m/ddr_init.c | 7 ---
> drivers/ddr/imx/imx8m/ddrphy_utils.c | 2 +-
> 2 files changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/ddr/imx/imx8m/ddr_init.c
> b/drivers/ddr/imx/imx8m/ddr_init.c
> index f573a778d9..a1d2d21692 100644
> --- a/drivers/ddr/imx/imx8m/ddr_init.c
> +++ b/drivers/ddr/imx/imx8m/ddr_init.c
> @@ -95,7 +95,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
> unsigned int tmp, initial_drate, target_freq;
> int ret;
>
> - debug("DDRINFO: start DRAM init\n");
> + printf("DDRINFO: start DRAM init\n");
>
> /* Step1: Follow the power up procedure */
> if (is_imx8mq()) {
> @@ -118,6 +118,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
>
> initial_drate = dram_timing->fsp_msg[0].drate;
> /* default to the frequency point 0 clock */
> + printf("DDRINFO: DRAM rate %dMTS\n", initial_drate);
> ddrphy_init_set_dfi_clk(initial_drate);
>
> /* D-aasert the presetn */
> @@ -184,7 +185,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
> tmp = reg32_read(DDRPHY_CalBusy(0));
> } while ((tmp & 0x1));
>
> - debug("DDRINFO:ddrphy calibration done\n");
> + printf("DDRINFO:ddrphy calibration done\n");
>
> /* Step15: Set SWCTL.sw_done to 0 */
> reg32_write(DDRC_SWCTL(0), 0x);
> @@ -236,7 +237,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
>
> /* enable port 0 */
> reg32_write(DDRC_PCTRL_0(0), 0x0001);
> - debug("DDRINFO: ddrmix config done\n");
> + printf("DDRINFO: ddrmix config done\n");
>
> board_dram_ecc_scrub();
>
> diff --git a/drivers/ddr/imx/imx8m/ddrphy_utils.c
> b/drivers/ddr/imx/imx8m/ddrphy_utils.c
> index 9ac7ca923c..9d2378d7dd 100644
> --- a/drivers/ddr/imx/imx8m/ddrphy_utils.c
> +++ b/drivers/ddr/imx/imx8m/ddrphy_utils.c
> @@ -97,7 +97,7 @@ int wait_ddrphy_training_complete(void)
> debug("Training PASS\n");
> return 0;
> } else if (mail == 0xff) {
> - debug("Training FAILED\n");
> + printf("Training FAILED\n");
> return -1;
> }
> }
>
--
=
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: sba...@denx.de
=
Re: [PATCH 4/8] drivers: ddr: imx8m: add print for DRAM rate
On Mon, May 11, 2020 at 9:13 AM Fabio Estevam wrote:
>
> Hi Peng,
>
> On Mon, May 11, 2020 at 6:30 AM Peng Fan wrote:
> >
> > From: Ye Li
> >
> > Enable print to show the DRAM rate of current setting and training
> > result.
I am not a fan of this.
> >
> > Reviewed-by: Peng Fan
> > Signed-off-by: Ye Li
> > Signed-off-by: Peng Fan
>
> This is basically a revert from:
>
> commit 0d3bc81391ac031758affdb0811bc9c8b905978c
> Author: Fabio Estevam
> Date: Wed Dec 11 17:37:09 2019 -0300
>
> imx8m: ddr_init: Move ddr_init() messages to debug level
>
> Currently inside ddr_init() there is a mix of printf() and debug()
> level messages.
>
> Since this type of information is useful for debug purposes,
> convert all of them to debug level for consistency.
>
> Signed-off-by: Fabio Estevam
> Reviewed-by: Peng Fan
>
> In the normal boot cases I don't think these messages are helpful.
I would agree. As a user, I don't think most people will want to know
this, and it creates a bunch of chatter. For people who want it,
enable the debug.
>
> > diff --git a/drivers/ddr/imx/imx8m/ddrphy_utils.c
> > b/drivers/ddr/imx/imx8m/ddrphy_utils.c
> > index 9ac7ca923c..9d2378d7dd 100644
> > --- a/drivers/ddr/imx/imx8m/ddrphy_utils.c
> > +++ b/drivers/ddr/imx/imx8m/ddrphy_utils.c
> > @@ -97,7 +97,7 @@ int wait_ddrphy_training_complete(void)
> > debug("Training PASS\n");
> > return 0;
> > } else if (mail == 0xff) {
> > - debug("Training FAILED\n");
> > + printf("Training FAILED\n");
>
> This one is an error message, so I agree that it is useful to have it printed.
I would agree here.
adam
Re: [PATCH 4/8] drivers: ddr: imx8m: add print for DRAM rate
Hi Peng,
On Mon, May 11, 2020 at 6:30 AM Peng Fan wrote:
>
> From: Ye Li
>
> Enable print to show the DRAM rate of current setting and training
> result.
>
> Reviewed-by: Peng Fan
> Signed-off-by: Ye Li
> Signed-off-by: Peng Fan
This is basically a revert from:
commit 0d3bc81391ac031758affdb0811bc9c8b905978c
Author: Fabio Estevam
Date: Wed Dec 11 17:37:09 2019 -0300
imx8m: ddr_init: Move ddr_init() messages to debug level
Currently inside ddr_init() there is a mix of printf() and debug()
level messages.
Since this type of information is useful for debug purposes,
convert all of them to debug level for consistency.
Signed-off-by: Fabio Estevam
Reviewed-by: Peng Fan
In the normal boot cases I don't think these messages are helpful.
> diff --git a/drivers/ddr/imx/imx8m/ddrphy_utils.c
> b/drivers/ddr/imx/imx8m/ddrphy_utils.c
> index 9ac7ca923c..9d2378d7dd 100644
> --- a/drivers/ddr/imx/imx8m/ddrphy_utils.c
> +++ b/drivers/ddr/imx/imx8m/ddrphy_utils.c
> @@ -97,7 +97,7 @@ int wait_ddrphy_training_complete(void)
> debug("Training PASS\n");
> return 0;
> } else if (mail == 0xff) {
> - debug("Training FAILED\n");
> + printf("Training FAILED\n");
This one is an error message, so I agree that it is useful to have it printed.
[PATCH 4/8] drivers: ddr: imx8m: add print for DRAM rate
From: Ye Li
Enable print to show the DRAM rate of current setting and training
result.
Reviewed-by: Peng Fan
Signed-off-by: Ye Li
Signed-off-by: Peng Fan
---
drivers/ddr/imx/imx8m/ddr_init.c | 7 ---
drivers/ddr/imx/imx8m/ddrphy_utils.c | 2 +-
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/ddr/imx/imx8m/ddr_init.c b/drivers/ddr/imx/imx8m/ddr_init.c
index f573a778d9..a1d2d21692 100644
--- a/drivers/ddr/imx/imx8m/ddr_init.c
+++ b/drivers/ddr/imx/imx8m/ddr_init.c
@@ -95,7 +95,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
unsigned int tmp, initial_drate, target_freq;
int ret;
- debug("DDRINFO: start DRAM init\n");
+ printf("DDRINFO: start DRAM init\n");
/* Step1: Follow the power up procedure */
if (is_imx8mq()) {
@@ -118,6 +118,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
initial_drate = dram_timing->fsp_msg[0].drate;
/* default to the frequency point 0 clock */
+ printf("DDRINFO: DRAM rate %dMTS\n", initial_drate);
ddrphy_init_set_dfi_clk(initial_drate);
/* D-aasert the presetn */
@@ -184,7 +185,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
tmp = reg32_read(DDRPHY_CalBusy(0));
} while ((tmp & 0x1));
- debug("DDRINFO:ddrphy calibration done\n");
+ printf("DDRINFO:ddrphy calibration done\n");
/* Step15: Set SWCTL.sw_done to 0 */
reg32_write(DDRC_SWCTL(0), 0x);
@@ -236,7 +237,7 @@ int ddr_init(struct dram_timing_info *dram_timing)
/* enable port 0 */
reg32_write(DDRC_PCTRL_0(0), 0x0001);
- debug("DDRINFO: ddrmix config done\n");
+ printf("DDRINFO: ddrmix config done\n");
board_dram_ecc_scrub();
diff --git a/drivers/ddr/imx/imx8m/ddrphy_utils.c
b/drivers/ddr/imx/imx8m/ddrphy_utils.c
index 9ac7ca923c..9d2378d7dd 100644
--- a/drivers/ddr/imx/imx8m/ddrphy_utils.c
+++ b/drivers/ddr/imx/imx8m/ddrphy_utils.c
@@ -97,7 +97,7 @@ int wait_ddrphy_training_complete(void)
debug("Training PASS\n");
return 0;
} else if (mail == 0xff) {
- debug("Training FAILED\n");
+ printf("Training FAILED\n");
return -1;
}
}
--
2.16.4
