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ARM i.MX5: Add S/PDIF clocks

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This patch adds the S/PDIF clocks for i.MX51 and i.MX53. Tested on i.MX53.
The i.MX51 has a second set of spdif_root clock dividers, and on i.MX53
there is an additional input to the spdif_xtal mux.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Philipp Zabel 2013-05-17 15:49:03 +02:00 committed by Shawn Guo
parent c9a74f5569
commit beb2d1c1ba
2 changed files with 39 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/devicetree/bindings/clock/imx5-clock.txt
View File

@ -185,6 +185,18 @@ clocks and IDs.
srtc_gate 171
pata_gate 172
sata_gate 173
spdif_xtal_sel 174
spdif0_sel 175
spdif1_sel 176
spdif0_pred 177
spdif0_podf 178
spdif1_pred 179
spdif1_podf 180
spdif0_com_sel 181
spdif1_com_sel 182
spdif0_gate 183
spdif1_gate 184
spdif_ipg_gate 185
Examples (for mx53):

28
arch/arm/mach-imx/clk-imx51-imx53.c
View File

@ -73,6 +73,12 @@ static const char *mx53_cko2_sel[] = {
"tve_sel", "lp_apm",
"uart_root", "dummy"/* spdif0_clk_root */,
"dummy", "dummy", };
static const char *mx51_spdif_xtal_sel[] = { "osc", "ckih", "ckih2", };
static const char *mx53_spdif_xtal_sel[] = { "osc", "ckih", "ckih2", "pll4_sw", };
static const char *spdif_sel[] = { "pll1_sw", "pll2_sw", "pll3_sw", "spdif_xtal_sel", };
static const char *spdif0_com_sel[] = { "spdif0_podf", "ssi1_root_gate", };
static const char *mx51_spdif1_com_sel[] = { "spdif1_podf", "ssi2_root_gate", };
enum imx5_clks {
dummy, ckil, osc, ckih1, ckih2, ahb, ipg, axi_a, axi_b, uart_pred,
@ -110,7 +116,9 @@ enum imx5_clks {
owire_gate, gpu3d_s, gpu2d_s, gpu3d_gate, gpu2d_gate, garb_gate,
cko1_sel, cko1_podf, cko1,
cko2_sel, cko2_podf, cko2,
srtc_gate, pata_gate, sata_gate,
srtc_gate, pata_gate, sata_gate, spdif_xtal_sel, spdif0_sel,
spdif1_sel, spdif0_pred, spdif0_podf, spdif1_pred, spdif1_podf,
spdif0_com_s, spdif1_com_sel, spdif0_gate, spdif1_gate, spdif_ipg_gate,
clk_max
};
@ -269,6 +277,13 @@ static void __init mx5_clocks_common_init(unsigned long rate_ckil,
clk[owire_gate] = imx_clk_gate2("owire_gate", "per_root", MXC_CCM_CCGR2, 22);
clk[srtc_gate] = imx_clk_gate2("srtc_gate", "per_root", MXC_CCM_CCGR4, 28);
clk[pata_gate] = imx_clk_gate2("pata_gate", "ipg", MXC_CCM_CCGR4, 0);
clk[spdif0_sel] = imx_clk_mux("spdif0_sel", MXC_CCM_CSCMR2, 0, 2, spdif_sel, ARRAY_SIZE(spdif_sel));
clk[spdif0_pred] = imx_clk_divider("spdif0_pred", "spdif0_sel", MXC_CCM_CDCDR, 25, 3);
clk[spdif0_podf] = imx_clk_divider("spdif0_podf", "spdif0_pred", MXC_CCM_CDCDR, 19, 6);
clk[spdif0_com_s] = imx_clk_mux_flags("spdif0_com_sel", MXC_CCM_CSCMR2, 4, 1,
spdif0_com_sel, ARRAY_SIZE(spdif0_com_sel), CLK_SET_RATE_PARENT);
clk[spdif0_gate] = imx_clk_gate2("spdif0_gate", "spdif0_com_sel", MXC_CCM_CCGR5, 26);
clk[spdif_ipg_gate] = imx_clk_gate2("spdif_ipg_gate", "ipg", MXC_CCM_CCGR5, 30);
for (i = 0; i < ARRAY_SIZE(clk); i++)
if (IS_ERR(clk[i]))
@ -380,6 +395,15 @@ int __init mx51_clocks_init(unsigned long rate_ckil, unsigned long rate_osc,
clk[mipi_hsc2_gate] = imx_clk_gate2("mipi_hsc2_gate", "ipg", MXC_CCM_CCGR4, 8);
clk[mipi_esc_gate] = imx_clk_gate2("mipi_esc_gate", "ipg", MXC_CCM_CCGR4, 10);
clk[mipi_hsp_gate] = imx_clk_gate2("mipi_hsp_gate", "ipg", MXC_CCM_CCGR4, 12);
clk[spdif_xtal_sel] = imx_clk_mux("spdif_xtal_sel", MXC_CCM_CSCMR1, 2, 2,
mx51_spdif_xtal_sel, ARRAY_SIZE(mx51_spdif_xtal_sel));
clk[spdif1_sel] = imx_clk_mux("spdif1_sel", MXC_CCM_CSCMR2, 2, 2,
spdif_sel, ARRAY_SIZE(spdif_sel));
clk[spdif1_pred] = imx_clk_divider("spdif1_podf", "spdif1_sel", MXC_CCM_CDCDR, 16, 3);
clk[spdif1_podf] = imx_clk_divider("spdif1_podf", "spdif1_pred", MXC_CCM_CDCDR, 9, 6);
clk[spdif1_com_sel] = imx_clk_mux("spdif1_com_sel", MXC_CCM_CSCMR2, 5, 1,
mx51_spdif1_com_sel, ARRAY_SIZE(mx51_spdif1_com_sel));
clk[spdif1_gate] = imx_clk_gate2("spdif1_gate", "spdif1_com_sel", MXC_CCM_CCGR5, 28);
for (i = 0; i < ARRAY_SIZE(clk); i++)
if (IS_ERR(clk[i]))
@ -498,6 +522,8 @@ int __init mx53_clocks_init(unsigned long rate_ckil, unsigned long rate_osc,
mx53_cko2_sel, ARRAY_SIZE(mx53_cko2_sel));
clk[cko2_podf] = imx_clk_divider("cko2_podf", "cko2_sel", MXC_CCM_CCOSR, 21, 3);
clk[cko2] = imx_clk_gate2("cko2", "cko2_podf", MXC_CCM_CCOSR, 24);
clk[spdif_xtal_sel] = imx_clk_mux("spdif_xtal_sel", MXC_CCM_CSCMR1, 2, 2,
mx53_spdif_xtal_sel, ARRAY_SIZE(mx53_spdif_xtal_sel));
for (i = 0; i < ARRAY_SIZE(clk); i++)
if (IS_ERR(clk[i]))