From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Anson Huang <anson.huang@nxp.com>,
Anson Huang <Anson.Huang@nxp.com>,
Stephen Boyd <sboyd@kernel.org>, Sasha Levin <sashal@kernel.org>,
linux-clk@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 087/170] clk: imx6sl: ensure MMDC CH0 handshake is bypassed
Date: Mon, 28 Jan 2019 11:10:37 -0500 [thread overview]
Message-ID: <20190128161200.55107-87-sashal@kernel.org> (raw)
In-Reply-To: <20190128161200.55107-1-sashal@kernel.org>
From: Anson Huang <anson.huang@nxp.com>
[ Upstream commit 0efcc2c0fd2001a83240a8c3d71f67770484917e ]
Same as other i.MX6 SoCs, ensure unused MMDC channel's
handshake is bypassed, this is to make sure no request
signal will be generated when periphe_clk_sel is changed
or SRC warm reset is triggered.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/clk/imx/clk-imx6sl.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/clk/imx/clk-imx6sl.c b/drivers/clk/imx/clk-imx6sl.c
index 9642cdf0fb88..c264a744fae8 100644
--- a/drivers/clk/imx/clk-imx6sl.c
+++ b/drivers/clk/imx/clk-imx6sl.c
@@ -17,6 +17,8 @@
#include "clk.h"
+#define CCDR 0x4
+#define BM_CCM_CCDR_MMDC_CH0_MASK (1 << 17)
#define CCSR 0xc
#define BM_CCSR_PLL1_SW_CLK_SEL (1 << 2)
#define CACRR 0x10
@@ -414,6 +416,10 @@ static void __init imx6sl_clocks_init(struct device_node *ccm_node)
clks[IMX6SL_CLK_USDHC3] = imx_clk_gate2("usdhc3", "usdhc3_podf", base + 0x80, 6);
clks[IMX6SL_CLK_USDHC4] = imx_clk_gate2("usdhc4", "usdhc4_podf", base + 0x80, 8);
+ /* Ensure the MMDC CH0 handshake is bypassed */
+ writel_relaxed(readl_relaxed(base + CCDR) |
+ BM_CCM_CCDR_MMDC_CH0_MASK, base + CCDR);
+
imx_check_clocks(clks, ARRAY_SIZE(clks));
clk_data.clks = clks;
--
2.19.1
prev parent reply other threads:[~2019-01-28 17:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190128161200.55107-1-sashal@kernel.org>
2019-01-28 16:09 ` [PATCH AUTOSEL 4.14 013/170] clk: boston: fix possible memory leak in clk_boston_setup() Sasha Levin
2019-01-28 16:10 ` [PATCH AUTOSEL 4.14 069/170] clk: sunxi-ng: a33: Set CLK_SET_RATE_PARENT for all audio module clocks Sasha Levin
2019-01-28 16:10 ` Sasha Levin [this message]
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