[U-Boot] [PATCH] zynq: sdhci: Define max clock by macro

Michal Simek michal.simek at xilinx.com
Tue Oct 27 16:21:42 CET 2015


zc1571 with silicon can operate on 200MHz maximum frequency. Setup this
frequency by default and fix setting for ep108.

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

 drivers/mmc/zynq_sdhci.c           | 2 +-
 include/configs/xilinx_zynqmp.h    | 3 +++
 include/configs/xilinx_zynqmp_ep.h | 1 +
 include/configs/zynq-common.h      | 1 +
 4 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index c69f5d4e2d44..e169b774932a 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, 52000000, 52000000 >> 9);
+	add_sdhci(host, CONFIG_ZYNQ_SDHCI_MAX_FREQ, 52000000 >> 9);
 	return 0;
 }
 
diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h
index 32ee0fc149ff..921a3d48c045 100644
--- a/include/configs/xilinx_zynqmp.h
+++ b/include/configs/xilinx_zynqmp.h
@@ -96,6 +96,9 @@
 # define CONFIG_SDHCI
 # define CONFIG_ZYNQ_SDHCI
 # define CONFIG_CMD_MMC
+# ifndef CONFIG_ZYNQ_SDHCI_MAX_FREQ
+#  define CONFIG_ZYNQ_SDHCI_MAX_FREQ	200000000
+# endif
 #endif
 
 #if defined(CONFIG_ZYNQ_SDHCI)
diff --git a/include/configs/xilinx_zynqmp_ep.h b/include/configs/xilinx_zynqmp_ep.h
index e476eb1b496d..78e7a9dbaa3e 100644
--- a/include/configs/xilinx_zynqmp_ep.h
+++ b/include/configs/xilinx_zynqmp_ep.h
@@ -20,6 +20,7 @@
 
 #define CONFIG_ZYNQ_SERIAL_UART0
 #define CONFIG_ZYNQ_SDHCI0
+#define CONFIG_ZYNQ_SDHCI_MAX_FREQ	52000000
 #define CONFIG_ZYNQ_I2C0
 #define CONFIG_SYS_I2C_ZYNQ
 #define CONFIG_ZYNQ_EEPROM
diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h
index 66b1e699c80b..d67df7b2131c 100644
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@@ -95,6 +95,7 @@
 # define CONFIG_SDHCI
 # define CONFIG_ZYNQ_SDHCI
 # define CONFIG_CMD_MMC
+# define CONFIG_ZYNQ_SDHCI_MAX_FREQ	52000000
 #endif
 
 #ifdef CONFIG_ZYNQ_USB
-- 
2.5.0



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