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From: Douglas Anderson <dianders@chromium.org>
To: Stephen Boyd <sboyd@kernel.org>
Cc: Taniya Das <tdas@codeaurora.org>,
	vbadigan@codeaurora.org, Douglas Anderson <dianders@chromium.org>,
	Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Michael Turquette <mturquette@baylibre.com>,
	linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] clk: qcom: gcc-sc7180: Add 50 MHz clock rate for SDC2
Date: Thu, 10 Dec 2020 10:22:39 -0800	[thread overview]
Message-ID: <20201210102234.2.I26dcc0cee374f5571d9929c9985f463773167e68@changeid> (raw)
In-Reply-To: <20201210102234.1.I096779f219625148900fc984dd0084ed1ba87c7f@changeid>

50 MHz is an incredibly common clock rate for SD cards to run at.
It's "high speed" mode in SD (not very fast these days, but it used to
be) or:
  #define HIGH_SPEED_MAX_DTR	50000000

If we don't support this then older "high speed" cards can only run at
25 MHz or at half their normal speed.  There doesn't seem to be any
reason to skip this clock rate, so add it.

Fixes: 17269568f726 ("clk: qcom: Add Global Clock controller (GCC) driver for SC7180")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

 drivers/clk/qcom/gcc-sc7180.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/qcom/gcc-sc7180.c b/drivers/clk/qcom/gcc-sc7180.c
index b080739ab0c3..d82d725ac231 100644
--- a/drivers/clk/qcom/gcc-sc7180.c
+++ b/drivers/clk/qcom/gcc-sc7180.c
@@ -651,6 +651,7 @@ static const struct freq_tbl ftbl_gcc_sdcc2_apps_clk_src[] = {
 	F(9600000, P_BI_TCXO, 2, 0, 0),
 	F(19200000, P_BI_TCXO, 1, 0, 0),
 	F(25000000, P_GPLL0_OUT_EVEN, 12, 0, 0),
+	F(50000000, P_GPLL0_OUT_EVEN, 6, 0, 0),
 	F(100000000, P_GPLL0_OUT_EVEN, 3, 0, 0),
 	F(202000000, P_GPLL7_OUT_MAIN, 4, 0, 0),
 	{ }
-- 
2.29.2.576.ga3fc446d84-goog


  reply	other threads:[~2020-12-10 18:24 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-10 18:22 [PATCH 1/2] clk: qcom: gcc-sc7180: Use floor ops for sdcc clks Douglas Anderson
2020-12-10 18:22 ` Douglas Anderson [this message]
2020-12-10 19:41   ` [PATCH 2/2] clk: qcom: gcc-sc7180: Add 50 MHz clock rate for SDC2 Bjorn Andersson
2020-12-10 20:27   ` Stephen Boyd
2020-12-10 19:39 ` [PATCH 1/2] clk: qcom: gcc-sc7180: Use floor ops for sdcc clks Bjorn Andersson
2020-12-10 20:27 ` Stephen Boyd
2020-12-10 21:00   ` Doug Anderson
2020-12-10 20:27 ` Stephen Boyd
2020-12-29 20:15 ` patchwork-bot+linux-arm-msm

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