Merge tag 'xilinx-for-v2021.01-v2' of https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze

Xilinx changes for v2021.01-v2

common:
- Add support for 64bit loadables from SPL

xilinx:
- Update documentation and record ownership
- Enable eeprom board detection based legacy and fru formats
- Add support for FRU format

microblaze:
- Optimize low level ASM code
- Enable SPI/I2C
- Enable distro boot

zynq:
- Add support for Zturn V5

zynqmp:
- Improve silicon detection code
- Enable several kconfig options
- Align DT with the latest state
- Enabling security commands
- Enable and support FPGA loading from SPL
- Optimize xilinx_pm_request() calling

versal:
- Some DTs/Kconfig/defconfig alignments
- Add binding header for clock and power

zynq-sdhci:
- Add support for tap delay programming

zynq-spi/zynq-qspi:
- Use clock framework for getting clocks

xilinx-spi:
- Fix some code issues (unused variables)

serial:
- Check return value from clock functions in pl01x

1 files changed, 28 insertions, 7 deletions

diff --git a/drivers/spi/zynq_spi.c b/drivers/spi/zynq_spi.c
index 9923931e36e..cb911c34f68 100644
--- a/drivers/spi/zynq_spi.c
+++ b/drivers/spi/zynq_spi.c
@@ -8,10 +8,12 @@
 
 #include <common.h>
 #include <dm.h>
+#include <dm/device_compat.h>
 #include <log.h>
 #include <malloc.h>
 #include <spi.h>
 #include <time.h>
+#include <clk.h>
 #include <asm/io.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
@@ -79,17 +81,10 @@ static int zynq_spi_ofdata_to_platdata(struct udevice *bus)
 
 	plat->regs = dev_read_addr_ptr(bus);
 
-	/* FIXME: Use 250MHz as a suitable default */
-	plat->frequency = fdtdec_get_int(blob, node, "spi-max-frequency",
-					250000000);
 	plat->deactivate_delay_us = fdtdec_get_int(blob, node,
 					"spi-deactivate-delay", 0);
 	plat->activate_delay_us = fdtdec_get_int(blob, node,
 						 "spi-activate-delay", 0);
-	plat->speed_hz = plat->frequency / 2;
-
-	debug("%s: regs=%p max-frequency=%d\n", __func__,
-	      plat->regs, plat->frequency);
 
 	return 0;
 }
@@ -128,13 +123,39 @@ static int zynq_spi_probe(struct udevice *bus)
 {
 	struct zynq_spi_platdata *plat = dev_get_platdata(bus);
 	struct zynq_spi_priv *priv = dev_get_priv(bus);
+	struct clk clk;
+	unsigned long clock;
+	int ret;
 
 	priv->regs = plat->regs;
 	priv->fifo_depth = ZYNQ_SPI_FIFO_DEPTH;
 
+	ret = clk_get_by_name(bus, "ref_clk", &clk);
+	if (ret < 0) {
+		dev_err(bus, "failed to get clock\n");
+		return ret;
+	}
+
+	clock = clk_get_rate(&clk);
+	if (IS_ERR_VALUE(clock)) {
+		dev_err(bus, "failed to get rate\n");
+		return clock;
+	}
+
+	ret = clk_enable(&clk);
+	if (ret && ret != -ENOSYS) {
+		dev_err(bus, "failed to enable clock\n");
+		return ret;
+	}
+
 	/* init the zynq spi hw */
 	zynq_spi_init_hw(priv);
 
+	plat->frequency = clock;
+	plat->speed_hz = plat->frequency / 2;
+
+	debug("%s: max-frequency=%d\n", __func__, plat->speed_hz);
+
 	return 0;
 }