[PATCH 2/3] clk: qcom: gcc-x1e80100: Remove 85.71 MHz USB4 master clock frequency

Konrad Dybcio posted 3 patches 4 months ago
[PATCH 2/3] clk: qcom: gcc-x1e80100: Remove 85.71 MHz USB4 master clock frequency
Posted by Konrad Dybcio 4 months ago
From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

The USB4 HPG says this frequency remains unused, remove it from the
frequency table to avoid any misunderstandings.

The reason it's unused seems to be that the lower RPMh level required
to support it (LOW_SVS) is not enough for other pieces of the pipeline
which require SVS, which in turn is enough to support a faster, 175 MHz
rate.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
---
 drivers/clk/qcom/gcc-x1e80100.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/clk/qcom/gcc-x1e80100.c b/drivers/clk/qcom/gcc-x1e80100.c
index 301fc9fc32d8..474404f9ddb4 100644
--- a/drivers/clk/qcom/gcc-x1e80100.c
+++ b/drivers/clk/qcom/gcc-x1e80100.c
@@ -1456,7 +1456,6 @@ static struct clk_rcg2 gcc_usb3_tert_phy_aux_clk_src = {
 };
 
 static const struct freq_tbl ftbl_gcc_usb4_0_master_clk_src[] = {
-	F(85714286, P_GCC_GPLL0_OUT_EVEN, 3.5, 0, 0),
 	F(175000000, P_GCC_GPLL8_OUT_MAIN, 4, 0, 0),
 	F(350000000, P_GCC_GPLL8_OUT_MAIN, 2, 0, 0),
 	{ }

-- 
2.51.0
Re: [PATCH 2/3] clk: qcom: gcc-x1e80100: Remove 85.71 MHz USB4 master clock frequency
Posted by Abel Vesa 3 months, 3 weeks ago
On 25-10-10 12:24:51, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> 
> The USB4 HPG says this frequency remains unused, remove it from the
> frequency table to avoid any misunderstandings.
> 
> The reason it's unused seems to be that the lower RPMh level required
> to support it (LOW_SVS) is not enough for other pieces of the pipeline
> which require SVS, which in turn is enough to support a faster, 175 MHz
> rate.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Reviewed-by: Abel Vesa <abel.vesa@linaro.org>