From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
Always use 0x3f as channel mask for the SH_CMT_48BIT type of devices.
Once this patch is applied the "renesas,channels-mask" property will
be ignored by the driver for older devices matching SH_CMT_48BIT. In
the future when all CMT types store channel mask in the driver then
we will be able to deprecate and remove "renesas,channels-mask" from DTS.
Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
---
drivers/clocksource/sh_cmt.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
--- 0001/drivers/clocksource/sh_cmt.c
+++ work/drivers/clocksource/sh_cmt.c 2015-06-20 15:25:54.302366518 +0900
@@ -74,6 +74,8 @@ enum sh_cmt_model {
struct sh_cmt_info {
enum sh_cmt_model model;
+ unsigned long channels_mask;
+
unsigned long width; /* 16 or 32 bit version of hardware block */
unsigned long overflow_bit;
unsigned long clear_bits;
@@ -212,6 +214,7 @@ static const struct sh_cmt_info sh_cmt_i
},
[SH_CMT_48BIT] = {
.model = SH_CMT_48BIT,
+ .channels_mask = 0x3f,
.width = 32,
.overflow_bit = SH_CMT32_CMCSR_CMF,
.clear_bits = ~(SH_CMT32_CMCSR_CMF | SH_CMT32_CMCSR_OVF),
@@ -969,9 +972,14 @@ static int sh_cmt_setup(struct sh_cmt_de
id = of_match_node(sh_cmt_of_table, pdev->dev.of_node);
cmt->info = id->data;
- ret = sh_cmt_parse_dt(cmt);
- if (ret < 0)
- return ret;
+ /* prefer in-driver channel configuration over DT */
+ if (cmt->info->channels_mask) {
+ cmt->hw_channels = cmt->info_channels_mask;
+ } else {
+ ret = sh_cmt_parse_dt(cmt);
+ if (ret < 0)
+ return ret;
+ }
} else if (pdev->dev.platform_data) {
struct sh_timer_config *cfg = pdev->dev.platform_data;
const struct platform_device_id *id = pdev->id_entry;
--
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