summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-davinci/devices-da8xx.c
diff options
context:
space:
mode:
authorBartosz Golaszewski <bgolaszewski@baylibre.com>2017-01-30 11:02:03 +0100
committerSekhar Nori <nsekhar@ti.com>2017-01-31 20:48:24 +0530
commit00bacfbfaf508940fd5fba22372a0935c4a01358 (patch)
tree7eff288b50a24f01e7ccd22f828c51d843490480 /arch/arm/mach-davinci/devices-da8xx.c
parent8ba0f6caa41c0786b964dcf75ab74bb05c726ec3 (diff)
downloadlinux-00bacfbfaf508940fd5fba22372a0935c4a01358.tar.bz2
ARM: davinci: da850: model the SATA refclk
Register a fixed rate clock modelling the external SATA oscillator for da850 (both DT and board file mode). Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'arch/arm/mach-davinci/devices-da8xx.c')
-rw-r--r--arch/arm/mach-davinci/devices-da8xx.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index c2457b3fdb5f..cfceb326a39b 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -24,6 +24,7 @@
#include <mach/common.h>
#include <mach/time.h>
#include <mach/da8xx.h>
+#include <mach/clock.h>
#include "cpuidle.h"
#include "sram.h"
@@ -1023,6 +1024,28 @@ int __init da8xx_register_spi_bus(int instance, unsigned num_chipselect)
}
#ifdef CONFIG_ARCH_DAVINCI_DA850
+static struct clk sata_refclk = {
+ .name = "sata_refclk",
+ .set_rate = davinci_simple_set_rate,
+};
+
+static struct clk_lookup sata_refclk_lookup =
+ CLK("ahci_da850", "refclk", &sata_refclk);
+
+int __init da850_register_sata_refclk(int rate)
+{
+ int ret;
+
+ sata_refclk.rate = rate;
+ ret = clk_register(&sata_refclk);
+ if (ret)
+ return ret;
+
+ clkdev_add(&sata_refclk_lookup);
+
+ return 0;
+}
+
static struct resource da850_sata_resources[] = {
{
.start = DA850_SATA_BASE,
@@ -1055,9 +1078,15 @@ static struct platform_device da850_sata_device = {
int __init da850_register_sata(unsigned long refclkpn)
{
+ int ret;
+
/* please see comment in drivers/ata/ahci_da850.c */
BUG_ON(refclkpn != 100 * 1000 * 1000);
+ ret = da850_register_sata_refclk(refclkpn);
+ if (ret)
+ return ret;
+
return platform_device_register(&da850_sata_device);
}
#endif