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authorTomi Valkeinen <tomi.valkeinen@ti.com>2013-11-01 10:26:43 +0100
committerTomi Valkeinen <tomi.valkeinen@ti.com>2013-11-18 13:32:25 +0100
commit6e555e2752ea284bda55b0ee477a512e1525b84a (patch)
tree5bdc8a51e572c2463622d59e92c632c7a338ebc1 /drivers/video
parentLinux 3.12 (diff)
downloadlinux-6e555e2752ea284bda55b0ee477a512e1525b84a.tar.xz
linux-6e555e2752ea284bda55b0ee477a512e1525b84a.zip
OMAPDSS: fix omap2 dss fck handling
The driver considers OMAP2 DSS's functional clock as a fixed clock. However, it can be changed, but the possible dividers are not continuous which is why it was just handled as a fixed clock. As a partial fix, this patch changes the code to handle the continous part of the dividers, from 1 to 6. This let's us handle the OMAP2 fck the same way as fcks on other OMAPs. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/omap2/dss/dss.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index bd01608e67e2..e59577a2c41c 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -484,11 +484,6 @@ bool dss_div_calc(unsigned long fck_min, dss_div_calc_func func, void *data)
unsigned m;
if (dss.dpll4_m4_ck == NULL) {
- /*
- * TODO: dss1_fclk can be changed on OMAP2, but the available
- * dividers are not continuous. We just use the pre-set rate for
- * now.
- */
fck = clk_get_rate(dss.dss_clk);
fckd = 1;
return func(fckd, fck, data);
@@ -761,9 +756,13 @@ void dss_debug_dump_clocks(struct seq_file *s)
#endif
static const struct dss_features omap24xx_dss_feats __initconst = {
- .fck_div_max = 16,
+ /*
+ * fck div max is really 16, but the divider range has gaps. The range
+ * from 1 to 6 has no gaps, so let's use that as a max.
+ */
+ .fck_div_max = 6,
.dss_fck_multiplier = 2,
- .clk_name = NULL,
+ .clk_name = "dss1_fck",
.dpi_select_source = &dss_dpi_select_source_omap2_omap3,
};