Kukjin Kim wrote:
>
>Shaik Ameer Basha wrote:
>>
>> Add required clock support for Gscaler for exynos5
>>
>Hi,
>
>Cc'ed Sunyoung Kang who knows gscaler well in my team.
>
>> Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
>> Signed-off-by: Leela Krishna Amudala <l.krishna@xxxxxxxxxxx>
>> Signed-off-by: Prathyush K <prathyush.k@xxxxxxxxxxx>
>> Signed-off-by: Shaik Ameer Basha <shaik.ameer@xxxxxxxxxxx>
>> ---
>> arch/arm/mach-exynos/clock-exynos5.c | 79
>> ++++++++++++++++++++++++++++++++++
>> 1 files changed, 79 insertions(+), 0 deletions(-)
>>
>> diff --git a/arch/arm/mach-exynos/clock-exynos5.c b/arch/arm/mach-
>> exynos/clock-exynos5.c
>> index fefa336..c8293a3 100644
>> --- a/arch/arm/mach-exynos/clock-exynos5.c
>> +++ b/arch/arm/mach-exynos/clock-exynos5.c
>> @@ -741,6 +741,26 @@ static struct clk exynos5_init_clocks_off[] = {
>> .enable = exynos5_clk_ip_peric_ctrl,
>> .ctrlbit = (1 << 14),
>> }, {
>> + .name = "gscl",
>> + .devname = "exynos-gsc.0",
>> + .enable = exynos5_clk_ip_gscl_ctrl,
>> + .ctrlbit = (1 << 0),
>
>Sunyoung, I've seen (1 << 15) | (1 << 0) here instead, which one is right?
>
Actually, the ctrl bit, (1 << 0) is correct. The 15th bit Kukjin said is
used for another purpose.
>[snip]
>
>I think, following part should be moved between
>
>---
>static struct clksrc_clk exynos5_clk_aclk_66 = {
>[snip]
>};
>
><<<HERE>>>
>
>static struct clk exynos5_init_clocks_off[] = {
>---
>
>Please don't put your clock code without any checking the clock code.
>
>
>> +/* For ACLK_300_gscl_mid */
>> +static struct clksrc_clk exynos5_clk_mout_aclk_300_gscl_mid = {
>> + .clk = {
>> + .name = "mout_aclk_300_gscl_mid",
>> + },
>> + .sources = &exynos5_clkset_aclk,
>> + .reg_src = { .reg = EXYNOS5_CLKSRC_TOP0, .shift = 24, .size = 1 },
>> +};
>> +
>> +/* For ACLK_300_gscl */
>> +struct clk *exynos5_clkset_aclk_300_gscl_list[] = {
>> + [0] = &exynos5_clk_mout_aclk_300_gscl_mid.clk,
>> + [1] = &exynos5_clk_sclk_vpll.clk,
>
>As I know, this is wrong. Its [1] should be
>&exynos5_clk_mout_aclk_300_gscl_mid1.clk
>
Yes, right. It should be 'exynos5_clk_mout_aclk_300_gscl_mid1.clk' which is
generated by CPLL. The VPLL shouldn't be used here. It means you need to
implement CPLL for gscaler. As a note, CPLL can be used for fimd as well.
[snip]
Thanks.
BRs
Sunyoung
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