From fc9d4b123d50f95185baf37bea58b8ec499f3e66 Mon Sep 17 00:00:00 2001 From: Stephan Gerhold Date: Sat, 7 Aug 2021 15:07:21 +0200 Subject: [PATCH] arm: dts: u8500: u-boot: Add fixed clock for eMMC So far there is no need for a clock driver in U-Boot because the previous boot stage leaves all the necessary clocks on. However, some drivers in U-Boot (e.g. arm_pl180_mmci) depend on having a clock driver to obtain the clock frequency. Setting up the clock drivers properly is a bit tricky on U8500, so for now add a simple fixed-clock for the eMMC that allows obtaining the clock frequency. This should be replaced eventually if some board actually requires enabling some of the clocks. Signed-off-by: Stephan Gerhold --- arch/arm/dts/ste-dbx5x0-u-boot.dtsi | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/arm/dts/ste-dbx5x0-u-boot.dtsi b/arch/arm/dts/ste-dbx5x0-u-boot.dtsi index 4a99ee5..e350175 100644 --- a/arch/arm/dts/ste-dbx5x0-u-boot.dtsi +++ b/arch/arm/dts/ste-dbx5x0-u-boot.dtsi @@ -4,8 +4,14 @@ #include "ste-dbx5x0.dtsi" / { + /* FIXME: Remove this when clk driver is implemented */ + sdmmcclk: sdmmcclk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <100000000>; + }; + soc { - /* FIXME: Remove this when clk driver is implemented */ mtu@a03c6000 { clock-frequency = <133000000>; }; @@ -18,6 +24,9 @@ uart@80007000 { clock = <38400000>; }; + mmc@80005000 { + clocks = <&sdmmcclk>; + }; }; reboot { -- 2.7.4