From: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Date: Wed, 25 Nov 2015 06:21:37 +0000 (+0530)
Subject: zynq: sdhci: Calculate minimum frequency based on max frequency
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b8a9bebeecbf915f2fecab0cfa90899abd872512;p=project%2Fbcm63xx%2Fu-boot.git

zynq: sdhci: Calculate minimum frequency based on max frequency

Calculate the minimum sd clock based on max clock. This will
be done by add_sdhci() if we pass minimum clock as zero.
It also does based on SD host contoller version.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index e169b77493..2d6cb31e12 100644
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -29,7 +29,7 @@ int zynq_sdhci_init(phys_addr_t regbase)
 		       SDHCI_QUIRK_BROKEN_R1B;
 	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 
-	add_sdhci(host, CONFIG_ZYNQ_SDHCI_MAX_FREQ, 52000000 >> 9);
+	add_sdhci(host, CONFIG_ZYNQ_SDHCI_MAX_FREQ, 0);
 	return 0;
 }