From: Stefan Agner <stefan@agner.ch>
To: shawnguo@kernel.org, kernel@pengutronix.de, sboyd@codeaurora.org
Cc: aisheng.dong@nxp.com, dwmw2@infradead.org,
computersforpeace@gmail.com, boris.brezillon@free-electrons.com,
marek.vasut@gmail.com, richard@nod.at, robh+dt@kernel.org,
mark.rutland@arm.com, han.xu@nxp.com,
fabio.estevam@freescale.com, LW@KARO-electronics.de,
linux-mtd@lists.infradead.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
linux-kernel@vger.kernel.org, Stefan Agner <stefan@agner.ch>
Subject: [PATCH v6 1/3] clk: imx7d: create clocks behind rawnand clock gate
Date: Thu, 8 Jun 2017 15:34:47 -0700 [thread overview]
Message-ID: <8b9edf13938e3166081e72ba8fa4ac822035079c.1496961128.git-series.stefan@agner.ch> (raw)
In-Reply-To: <cover.9fab78eaa869dbad4c9ad7e8578c9cef3e49daa8.1496961128.git-series.stefan@agner.ch>
In-Reply-To: <cover.9fab78eaa869dbad4c9ad7e8578c9cef3e49daa8.1496961128.git-series.stefan@agner.ch>
The rawnand clock gate gates two clocks, NAND_USDHC_BUS_CLK_ROOT
and NAND_CLK_ROOT. However, the gate has been in the chain of the
latter only. This does not allow to use the NAND_USDHC_BUS_CLK_ROOT
only, e.g. as required by APBH-Bridge-DMA.
Add new clocks which represent the clock after the gate, and use a
shared clock gate to correctly model the hardware.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Tested-by: Fabio Estevam <fabio.estevam@nxp.com>
---
drivers/clk/imx/clk-imx7d.c | 6 ++++--
include/dt-bindings/clock/imx7d-clock.h | 4 +++-
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/imx/clk-imx7d.c b/drivers/clk/imx/clk-imx7d.c
index 93b0364..e364060 100644
--- a/drivers/clk/imx/clk-imx7d.c
+++ b/drivers/clk/imx/clk-imx7d.c
@@ -25,6 +25,7 @@
static u32 share_count_sai1;
static u32 share_count_sai2;
static u32 share_count_sai3;
+static u32 share_count_nand;
static struct clk_div_table test_div_table[] = {
{ .val = 3, .div = 1, },
@@ -748,7 +749,7 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node)
clks[IMX7D_ENET2_TIME_ROOT_DIV] = imx_clk_divider2("enet2_time_post_div", "enet2_time_pre_div", base + 0xa880, 0, 6);
clks[IMX7D_ENET_PHY_REF_ROOT_DIV] = imx_clk_divider2("enet_phy_ref_post_div", "enet_phy_ref_pre_div", base + 0xa900, 0, 6);
clks[IMX7D_EIM_ROOT_DIV] = imx_clk_divider2("eim_post_div", "eim_pre_div", base + 0xa980, 0, 6);
- clks[IMX7D_NAND_ROOT_DIV] = imx_clk_divider2("nand_post_div", "nand_pre_div", base + 0xaa00, 0, 6);
+ clks[IMX7D_NAND_ROOT_CLK] = imx_clk_divider2("nand_root_clk", "nand_pre_div", base + 0xaa00, 0, 6);
clks[IMX7D_QSPI_ROOT_DIV] = imx_clk_divider2("qspi_post_div", "qspi_pre_div", base + 0xaa80, 0, 6);
clks[IMX7D_USDHC1_ROOT_DIV] = imx_clk_divider2("usdhc1_post_div", "usdhc1_pre_div", base + 0xab00, 0, 6);
clks[IMX7D_USDHC2_ROOT_DIV] = imx_clk_divider2("usdhc2_post_div", "usdhc2_pre_div", base + 0xab80, 0, 6);
@@ -825,7 +826,8 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node)
clks[IMX7D_ENET2_TIME_ROOT_CLK] = imx_clk_gate4("enet2_time_root_clk", "enet2_time_post_div", base + 0x4510, 0);
clks[IMX7D_ENET_PHY_REF_ROOT_CLK] = imx_clk_gate4("enet_phy_ref_root_clk", "enet_phy_ref_post_div", base + 0x4520, 0);
clks[IMX7D_EIM_ROOT_CLK] = imx_clk_gate4("eim_root_clk", "eim_post_div", base + 0x4160, 0);
- clks[IMX7D_NAND_ROOT_CLK] = imx_clk_gate4("nand_root_clk", "nand_post_div", base + 0x4140, 0);
+ clks[IMX7D_NAND_RAWNAND_CLK] = imx_clk_gate2_shared2("nand_rawnand_clk", "nand_root_clk", base + 0x4140, 0, &share_count_nand);
+ clks[IMX7D_NAND_USDHC_BUS_RAWNAND_CLK] = imx_clk_gate2_shared2("nand_usdhc_rawnand_clk", "nand_usdhc_root_clk", base + 0x4140, 0, &share_count_nand);
clks[IMX7D_QSPI_ROOT_CLK] = imx_clk_gate4("qspi_root_clk", "qspi_post_div", base + 0x4150, 0);
clks[IMX7D_USDHC1_ROOT_CLK] = imx_clk_gate4("usdhc1_root_clk", "usdhc1_post_div", base + 0x46c0, 0);
clks[IMX7D_USDHC2_ROOT_CLK] = imx_clk_gate4("usdhc2_root_clk", "usdhc2_post_div", base + 0x46d0, 0);
diff --git a/include/dt-bindings/clock/imx7d-clock.h b/include/dt-bindings/clock/imx7d-clock.h
index a7a1a50..de62a83 100644
--- a/include/dt-bindings/clock/imx7d-clock.h
+++ b/include/dt-bindings/clock/imx7d-clock.h
@@ -450,5 +450,7 @@
#define IMX7D_CLK_ARM 437
#define IMX7D_CKIL 438
#define IMX7D_OCOTP_CLK 439
-#define IMX7D_CLK_END 440
+#define IMX7D_NAND_RAWNAND_CLK 440
+#define IMX7D_NAND_USDHC_BUS_RAWNAND_CLK 441
+#define IMX7D_CLK_END 442
#endif /* __DT_BINDINGS_CLOCK_IMX7D_H */
--
git-series 0.9.1
next prev parent reply other threads:[~2017-06-08 22:35 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-08 22:34 [PATCH v6 0/3] ARM: dts: imx7: add NAND support Stefan Agner
2017-06-08 22:34 ` Stefan Agner [this message]
2017-06-09 19:16 ` [PATCH v6 1/3] clk: imx7d: create clocks behind rawnand clock gate Han Xu
2017-06-20 1:01 ` Stephen Boyd
2017-06-08 22:34 ` [PATCH v6 2/3] ARM: dts: imx7: add GPMI NAND and APBH DMA Stefan Agner
2017-06-09 19:17 ` Han Xu
2017-06-08 22:34 ` [PATCH v6 3/3] ARM: dts: imx7-colibri: add NAND support Stefan Agner
2017-06-09 19:17 ` Han Xu
2017-06-14 15:11 ` [PATCH v6 0/3] ARM: dts: imx7: " Shawn Guo
2017-08-02 2:41 ` Stefan Agner
2017-08-03 1:13 ` Shawn Guo
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