linux-kernel - [PATCH 6/6] clk: imx6sx: enforce gating of gpmi

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Message-ID: <20220125085440.8768-2-ceggers@arri.de>
Date:   Tue, 25 Jan 2022 09:54:40 +0100
From:   Christian Eggers <ceggers@...i.de>
To:     Abel Vesa <abel.vesa@....com>
CC:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        <linux-clk@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Stefan Riedmueller <s.riedmueller@...tec.de>,
        Christian Eggers <ceggers@...i.de>
Subject: [PATCH 6/6] clk: imx6sx: enforce gating of gpmi_io clock

Clock parent and divider changes are both glitchy for qspi2_clock_root.
Enforce that the child clock is gated.

Signed-off-by: Christian Eggers <ceggers@...i.de>
---
 drivers/clk/imx/clk-imx6sx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/imx/clk-imx6sx.c b/drivers/clk/imx/clk-imx6sx.c
index cf1c1fad45f9..023a18594ebe 100644
--- a/drivers/clk/imx/clk-imx6sx.c
+++ b/drivers/clk/imx/clk-imx6sx.c
@@ -286,7 +286,7 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
 	hws[IMX6SX_CLK_ESAI_SEL]           = imx_clk_hw_mux("esai_sel",         base + 0x20,  19,     2,      audio_sels,        ARRAY_SIZE(audio_sels));
 	hws[IMX6SX_CLK_CAN_SEL]            = imx_clk_hw_mux("can_sel",          base + 0x20,  8,      2,      can_sels,          ARRAY_SIZE(can_sels));
 	hws[IMX6SX_CLK_UART_SEL]           = imx_clk_hw_mux("uart_sel",         base + 0x24,  6,      1,      uart_sels,         ARRAY_SIZE(uart_sels));
-	hws[IMX6SX_CLK_QSPI2_SEL]          = imx_clk_hw_mux_flags("qspi2_sel", base + 0x2c, 15, 3, qspi2_sels, ARRAY_SIZE(qspi2_sels), CLK_SET_RATE_PARENT);
+	hws[IMX6SX_CLK_QSPI2_SEL]          = imx_clk_hw_mux_flags("qspi2_sel", base + 0x2c, 15, 3, qspi2_sels, ARRAY_SIZE(qspi2_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
 	hws[IMX6SX_CLK_SPDIF_SEL]          = imx_clk_hw_mux("spdif_sel",        base + 0x30,  20,     2,      audio_sels,        ARRAY_SIZE(audio_sels));
 	hws[IMX6SX_CLK_AUDIO_SEL]          = imx_clk_hw_mux("audio_sel",        base + 0x30,  7,      2,      audio_sels,        ARRAY_SIZE(audio_sels));
 	hws[IMX6SX_CLK_ENET_PRE_SEL]       = imx_clk_hw_mux("enet_pre_sel",     base + 0x34,  15,     3,      enet_pre_sels,     ARRAY_SIZE(enet_pre_sels));
@@ -441,7 +441,7 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
 	hws[IMX6SX_CLK_PWM4]         = imx_clk_hw_gate2("pwm4",          "perclk",            base + 0x78, 22);
 	hws[IMX6SX_CLK_GPMI_BCH_APB] = imx_clk_hw_gate2("gpmi_bch_apb",  "usdhc3",            base + 0x78, 24);
 	hws[IMX6SX_CLK_GPMI_BCH]     = imx_clk_hw_gate2("gpmi_bch",      "usdhc4",            base + 0x78, 26);
-	hws[IMX6SX_CLK_GPMI_IO]      = imx_clk_hw_gate2("gpmi_io",       "qspi2_podf",        base + 0x78, 28);
+	hws[IMX6SX_CLK_GPMI_IO]      = imx_clk_hw_gate2_flags("gpmi_io",       "qspi2_podf",        base + 0x78, 28, CLK_SET_RATE_GATE);
 	hws[IMX6SX_CLK_GPMI_APB]     = imx_clk_hw_gate2("gpmi_apb",      "usdhc3",            base + 0x78, 30);
 
 	/* CCGR5 */
-- 
Christian Eggers
Embedded software developer

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