Hi,
-----Original Message----- From: Michal Simek michal.simek@amd.com Sent: Tuesday, July 11, 2023 3:28 PM To: Jaehoon Chung jh80.chung@samsung.com; u-boot@lists.denx.de; git@xilinx.com Cc: 'Ashok Reddy Soma' ashok.reddy.soma@amd.com; 'Peng Fan' peng.fan@nxp.com Subject: Re: [PATCH] mmc: zynq_sdhci: Dll reset only for ZynqMP platform
Hi,
On 7/11/23 07:00, Jaehoon Chung wrote:
Hi,
-----Original Message----- From: Michal Simek michal.simek@amd.com Sent: Monday, July 10, 2023 9:12 PM To: u-boot@lists.denx.de; git@xilinx.com Cc: Ashok Reddy Soma ashok.reddy.soma@amd.com; Jaehoon Chung jh80.chung@samsung.com; Peng Fan peng.fan@nxp.com Subject: [PATCH] mmc: zynq_sdhci: Dll reset only for ZynqMP platform
From: Ashok Reddy Soma ashok.reddy.soma@amd.com
Dll reset is needed only for ZynqMP platforms, add condition in tuning to call arasan_zynqmp_dll_reset() just for ZynqMP platforms.
On other platforms like Versal NET, If this condition is not added, we see PLM error messages when dll reset smc is called.
Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@amd.com Signed-off-by: Michal Simek michal.simek@amd.com
drivers/mmc/zynq_sdhci.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index e779251ce34f..935540d17194 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -422,7 +422,8 @@ static int arasan_sdhci_execute_tuning(struct mmc *mmc, u8 opcode)
mdelay(1);
- arasan_zynqmp_dll_reset(host, priv->node_id);
- if (device_is_compatible(mmc->dev, "xlnx,zynqmp-8.9a"))
arasan_zynqmp_dll_reset(host, priv->node_id);How about using local variable to check whether it needs to reset or not? It's not efficient to call device_is_compatible() everytime. (I'm not sure that it will be added more in future.)
e.g) bool reset = device_is_compatible(mmc->dev, "xlx,zynmp-8.8a");
if (reset) arasan_zynqmp_dll_reset(host, priv->node_id);
..
If (reset) arasan_zynqmp_dll_reset(host, priv->node_id);
This is very valid request and TBH I have already added this to our TODO list to convert all device_is_compatible() to flags because over time the driver was extended and this construct is used more than it should be.
This is going to be the last device_is_compatible() patch. Is it fine for you?
It's fine. Thanks!
Reviewed-by: Jaehoon Chung jh80.chung@samsung.com
Best Regards, Jaehoon Chung
Thanks, Michal