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Commit 99ba3dca9ef7c7b30f6a9014edb53c80556d6da9

Authored by Suman Anna
1 parent 898994a161
Exists in smarct4x-processor-sdk-linux-02.00.01 and in 3 other branches processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-02.00.01, smarct4x-800-processor-sdk-linux-02.00.01

remoteproc/keystone: add support for Keystone 2 Galileo SOCs 

Add support to the keystone remoteproc driver for managing the
DSP present in the Keystone 2 Galileo (K2G) SoC. The K2G SoC has
a Power Management Micro Controller (PMMC) that manages the
individual device's power, clock and reset functionalities.

The keystone remoteproc driver already uses standard frameworks
for reset and clock control, so it doesn't require any significant
modifications other than a new compatible suitable for K2G DSP.

The binding document is also updated to reflect the modified
property values used by the K2G DSP node as compared to the
values used by existing Keystone 2 DSPs.

NOTE:
The enhancement to use common pm_runtime framework for all Keystone
2 SoCs is left for a future time. The redundata clock API usage for
K2G does not impact any functionality, but is still required for
other K2 SoCs.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>

Showing 2 changed files with 45 additions and 5 deletions Side-by-side Diff

Documentation/devicetree/bindings/remoteproc/ti,keystone-rproc.txt
Diff comments   View file @ 99ba3dc
1 1 TI Keystone DSP devices
2 2 =======================
3 3  
4   -Binding status: Unstable - Subject to changes for Keystone2 Galileo SoCs
  4 +Binding status: Unstable - Subject to changes for using common shared memories
5 5  
6 6 The TI Keystone 2 family of SoCs usually have one or more (upto 8) TI DSP Core
7 7 sub-systems that are used to offload some of the processor-intensive tasks or
... ... @@ -27,6 +27,7 @@
27 27 "ti,k2hk-dsp" for DSPs on Keystone2 Hawking/Kepler SoCs
28 28 "ti,k2l-dsp" for DSPs on Keystone2 Lamarr SoCs
29 29 "ti,k2e-dsp" for DSPs on Keystone2 Edison SoCs
  30 + "ti,k2g-dsp" for DSPs on Keystone2 Galileo SoCs
30 31  
31 32 - reg: Should contain an entry for each value in 'reg-names'.
32 33 Each entry should have the memory region's start address
... ... @@ -41,6 +42,9 @@
41 42 - clocks: Should contain the device's input clock, and should be
42 43 defined as per the bindings in,
43 44 Documentation/devicetree/bindings/clock/keystone-gate.txt
  45 + for K2HK/K2L/K2E SoCs or,
  46 + Documentation/devicetree/bindings/clock/ti,sci-clk.txt
  47 + for K2G SoC
44 48  
45 49 - ti,syscon-dev: Should be a pair of the phandle to the Keystone Device
46 50 State Control node, and the register offset of the DSP
47 51  
... ... @@ -50,9 +54,12 @@
50 54 managing the resets for this device, and an array of
51 55 cells for the reset argument specifier as defined by
52 56 the selected reset controller node's binding. Please
53   - also refer to the reset bindings for the reset argument
54   - specifier details. This is defined in,
  57 + also refer to either of the following reset bindings
  58 + for the reset argument specifier as per SoC,
55 59 Documentation/devicetree/bindings/reset/reset/syscon-reset.txt
  60 + for K2HK/K2L/K2E SoCs or,
  61 + Documentation/devicetree/bindings/reset/reset/ti,sci-reset.txt
  62 + for K2G SoC
56 63  
57 64 - interrupt-parent: Should contain a phandle to the Keystone 2 IRQ controller
58 65 IP node that is used by the ARM CorePac processor to
... ... @@ -80,6 +87,11 @@
80 87 Optional properties:
81 88 --------------------
82 89  
  90 +- power-domains : _required_ property only for Keystone 2 Galileo SoC.
  91 + Should contain a phandle to a PM domain provider node,
  92 + and a PM domain specifier as defined by the binding,
  93 + Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
  94 +
83 95 - memory-region : phandle to the reserved memory node to be associated
84 96 with the remoteproc device. The reserved memory node
85 97 can be a CMA memory node, and should be defined as
86 98  
... ... @@ -87,9 +99,10 @@
87 99 Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
88 100  
89 101  
90   -Example:
91   ---------
  102 +Examples:
  103 +---------
92 104  
  105 +1.
93 106 /* K2HK DSP node in SoC DTS file */
94 107 soc {
95 108 dsp0: dsp0 {
... ... @@ -110,6 +123,32 @@
110 123 };
111 124  
112 125 /* K2HK EVM Board file */
  126 + &dsp0 {
  127 + memory-region = <&dsp_common_cma_pool>;
  128 + };
  129 +
  130 +2.
  131 + /* K2G DSP node in SoC DTS file */
  132 + soc {
  133 + dsp0: dsp0 {
  134 + compatible = "ti,k2g-dsp";
  135 + reg = <0x10800000 0x00100000>,
  136 + <0x10e00000 0x00008000>,
  137 + <0x10f00000 0x00008000>;
  138 + reg-names = "l2sram", "l1pram", "l1dram";
  139 + power-domains = <&k2g_pds K2G_DEV_CGEM0>;
  140 + clocks = <&k2g_clks K2G_DEV_CGEM0 0>;
  141 + ti,syscon-dev = <&devctrl 0x40>;
  142 + resets = <&k2g_reset K2G_DEV_CGEM0 K2G_DEV_CGEM0_DSP0_RESET>;
  143 + interrupt-parent = <&kirq0>;
  144 + interrupts = <0 8>;
  145 + interrupt-names = "vring", "exception";
  146 + kick-gpio = <&dspgpio0 27 0>;
  147 + };
  148 +
  149 + };
  150 +
  151 + /* K2G EVM Board file */
113 152 &dsp0 {
114 153 memory-region = <&dsp_common_cma_pool>;
115 154 };
drivers/remoteproc/keystone_remoteproc.c
Diff comments   View file @ 99ba3dc
... ... @@ -982,6 +982,7 @@
982 982 { .compatible = "ti,k2hk-dsp", },
983 983 { .compatible = "ti,k2l-dsp", },
984 984 { .compatible = "ti,k2e-dsp", },
  985 + { .compatible = "ti,k2g-dsp", },
985 986 { /* sentinel */ },
986 987 };
987 988 MODULE_DEVICE_TABLE(of, keystone_rproc_of_match);