Re: [U-Boot] [PATCH v3] dw_mmc: turn on the IO supply

30 Jul 2019

Hi Kever,
You could pick it up, not depends on mmc branch.
Thanks,
Peng.
From: Kever Yang [mailto:kever.yang@rock-chips.com]
Sent: 2019年7月26日 15:06
To: Peng Fan peng.fan@nxp.com
Cc: Urja Rannikko urjaman@gmail.com; u-boot@lists.denx.de
Subject: Re: [U-Boot] [PATCH v3] dw_mmc: turn on the IO supply
Hi Peng, Simon,
This patch is delegate to Philipp now, does this patch should go to Rockchip branch first?
I can do it if yes, but double with you in case this patch should go to mmc branch first.
Thanks,
- Kever
Peng Fan <peng.fan@nxp.commailto:peng.fan@nxp.com> 于2019年5月20日周一 下午3:04写道：
...
Subject: [U-Boot] [PATCH v3] dw_mmc: turn on the IO supply
Fixes the microSD slot on the ASUS C201.
Signed-off-by: Urja Rannikko <urjaman@gmail.commailto:urjaman@gmail.com>
v2: use #if CONFIG_IS_ENABLED(DM_REGULATOR)
v3: Move ret variable inside the if block (only used there)

drivers/mmc/dw_mmc.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index
1992d61182..22f6c7eefd 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -13,6 +13,7 @@
 #include <mmc.h>
 #include <dwmmc.h>
 #include <wait_bit.h>
+#include <power/regulator.h>
#define PAGE_SIZE 4096
@@ -493,6 +494,21 @@ static int dwmci_set_ios(struct mmc *mmc)
      if (host->clksel)
              host->clksel(host);
+#if CONFIG_IS_ENABLED(DM_REGULATOR)

if (mmc->vqmmc_supply) {


        int ret;



        if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180)


                regulator_set_value(mmc->vqmmc_supply, 1800000);


        else


                regulator_set_value(mmc->vqmmc_supply, 3300000);



        ret = regulator_set_enable_if_allowed(mmc->vqmmc_supply, true);


        if (ret)


                return ret;


}



+#endif



Reviewed-by: Peng Fan <peng.fan@nxp.commailto:peng.fan@nxp.com>
...
  return 0;

}
--
2.21.0

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