Date: Fri, 17 Aug 2018 13:36:30 +0930 From: "O'Connor, Daniel" <darius@dons.net.au> To: "Dr. Rolf Jansen" <rj@obsigna.com> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: Beaglebone Black pinmuxing Message-ID: <72D8FE35-EE57-4E40-A604-4DF9DC8FEE05@dons.net.au> In-Reply-To: <3B199FD0-479D-49C5-8E6F-DDE3D447EB03@dons.net.au> References: <13360A40-3381-4AF9-8EC5-C8E9B00CCABD@dons.net.au> <56756FA3-8FD7-44A4-A2D8-054E7C86744B@obsigna.com> <3B199FD0-479D-49C5-8E6F-DDE3D447EB03@dons.net.au>
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> On 17 Aug 2018, at 11:16, O'Connor, Daniel <darius@dons.net.au> wrote:
> OK, I'll go back to trying an overlay once I get it working by editing am335x-boneblack.dts
So, I got it working (without an overlay as yet) with this diff..
--- am335x-boneblack-orig.dts 2018-08-11 12:27:38.000000000 +0000
+++ am335x-boneblack.dts 2018-08-12 10:10:24.000000000 +0000
@@ -785,6 +785,13 @@
pinctrl-single,pins = <0x170 0x30 0x174 0x0>;
phandle = <0x4f>;
};
+ pinmux_uart4_pins {
+ pinctrl-single,pins = <
+ 0x070 0x2e // P9_11 gpmc_wait0.uart4_rxd_mux2 -> mode 6
+ 0x074 0x06 // P9_13 gpmc_wpn.uart4_txd_mux2 -> mode 6
+ >;
+ phandle = <0xce>;
+ };
pinmux_clkout2_pin {
pinctrl-single,pins = <0x1b4 0x3>;
@@ -1153,8 +1160,10 @@
clock-frequency = <0x2dc6c00>;
reg = <0x481a8000 0x2000>;
interrupts = <0x2d>;
- status = "disabled";
+ status = "okay";
phandle = <0x7a>;
+ pinctrl-names = "default";
+ pinctrl-0 = <0xce>;
};
serial@481aa000 {
@@ -2189,6 +2198,7 @@
hdmi_0 = "/ocp/i2c@44e0b000/tda19988/ports/port@0/endpoint@0";
gpio1 = "/ocp/gpio@4804c000";
uart0_pins = "/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_uart0_pins";
+ uart4_pins = "/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_uart4_pins";
i2c2_pins = "/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c2_pins";
pm_sram_data = "/ocp/ocmcram@40300000/pm-sram-data@1000";
sha0_fck = "/ocp/l4_wkup@44c00000/scm@210000/scm_conf@0/clocks/sha0_fck";
Next step is to make an overlay version - hopefully I can look at that tonight :)
--
Daniel O'Connor
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
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