This patch lets the spi driver to use clock provided by the clk driver
since the new clk-mt7628 driver provides accurate sys clock frequency.
Signed-off-by: Weijie Gao <weijie....@mediatek.com>
---
v2: newly added
---
drivers/spi/mt7621_spi.c | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/spi/mt7621_spi.c b/drivers/spi/mt7621_spi.c
index 107e58f657..b37f859b98 100644
--- a/drivers/spi/mt7621_spi.c
+++ b/drivers/spi/mt7621_spi.c
@@ -9,6 +9,7 @@
*/
#include <common.h>
+#include <clk.h>
#include <dm.h>
#include <spi.h>
#include <wait_bit.h>
@@ -266,19 +267,24 @@ static int mt7621_spi_xfer(struct udevice *dev, unsigned
int bitlen,
static int mt7621_spi_probe(struct udevice *dev)
{
struct mt7621_spi *rs = dev_get_priv(dev);
+ struct clk clk;
+ int ret;
rs->base = dev_remap_addr(dev);
if (!rs->base)
return -EINVAL;
- /*
- * Read input clock via DT for now. At some point this should be
- * replaced by implementing a clock driver for this SoC and getting
- * the SPI frequency via this clock driver.
- */
- rs->sys_freq = dev_read_u32_default(dev, "clock-frequency", 0);
+ ret = clk_get_by_index(dev, 0, &clk);
+ if (ret < 0) {
+ printf("Please provide a clock!\n");
+ return ret;
+ }
+
+ clk_enable(&clk);
+
+ rs->sys_freq = clk_get_rate(&clk);
if (!rs->sys_freq) {
- printf("Please provide clock-frequency!\n");
+ printf("Please provide a valid clock!\n");
return -EINVAL;
}
--
2.17.1
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