From 398dbc776a8f7dfdee7c38ad003e66abd31b3b0a Mon Sep 17 00:00:00 2001 From: Alexandre Bailon Date: Wed, 5 Apr 2017 19:17:50 +0200 Subject: [PATCH] ARM: davinci: Add clock for CPPI 4.1 DMA engine The CPPI 4.1 DMA in USB subsystem shares its clock with the USB OTG, and most of the time, the clock will be enabled by USB. But during the init of the DMA, USB is not enabled (waiting for DMA), and then we must enable the DMA clock before doing anything. Add clock for the CPPI 4.1 DMA engine. Signed-off-by: Alexandre Bailon [nsekhar@ti.com: minor commit message tweaks] Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/da830.c | 6 ++++++ arch/arm/mach-davinci/da850.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c index 073c458d0c67..bd88470f3e5c 100644 --- a/arch/arm/mach-davinci/da830.c +++ b/arch/arm/mach-davinci/da830.c @@ -304,6 +304,11 @@ static struct clk usb20_clk = { .gpsc = 1, }; +static struct clk cppi41_clk = { + .name = "cppi41", + .parent = &usb20_clk, +}; + static struct clk aemif_clk = { .name = "aemif", .parent = &pll0_sysclk3, @@ -413,6 +418,7 @@ static struct clk_lookup da830_clks[] = { CLK("davinci-mcasp.1", NULL, &mcasp1_clk), CLK("davinci-mcasp.2", NULL, &mcasp2_clk), CLK("musb-da8xx", "usb20", &usb20_clk), + CLK("cppi41-dmaengine", NULL, &cppi41_clk), CLK(NULL, "aemif", &aemif_clk), CLK(NULL, "aintc", &aintc_clk), CLK(NULL, "secu_mgr", &secu_mgr_clk), diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c index ccad2f99dfc9..07d6f0eb8c82 100644 --- a/arch/arm/mach-davinci/da850.c +++ b/arch/arm/mach-davinci/da850.c @@ -401,6 +401,11 @@ static struct clk usb20_clk = { .gpsc = 1, }; +static struct clk cppi41_clk = { + .name = "cppi41", + .parent = &usb20_clk, +}; + static struct clk spi0_clk = { .name = "spi0", .parent = &pll0_sysclk2, @@ -560,6 +565,7 @@ static struct clk_lookup da850_clks[] = { CLK("davinci-nand.0", "aemif", &aemif_nand_clk), CLK("ohci-da8xx", "usb11", &usb11_clk), CLK("musb-da8xx", "usb20", &usb20_clk), + CLK("cppi41-dmaengine", NULL, &cppi41_clk), CLK("spi_davinci.0", NULL, &spi0_clk), CLK("spi_davinci.1", NULL, &spi1_clk), CLK("vpif", NULL, &vpif_clk),